diff --git a/VERSION b/VERSION
index f7a332f..6d552cc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.265
+1.0.266
diff --git a/common/staging_install.py b/common/staging_install.py
index a1be9a4..ebc99f7 100755
--- a/common/staging_install.py
+++ b/common/staging_install.py
@@ -664,6 +664,8 @@
                                 os.remove(filepath)
                             elif os.path.splitext(libfile)[1] == '.swp':
                                 os.remove(filepath)
+                            elif os.path.splitext(libfile)[1] == '.orig':
+                                os.remove(filepath)
         else:
             libraries = os.listdir(writedir + refdir)
             for library in libraries:
@@ -694,6 +696,8 @@
                                 os.remove(libfilepath)
                             elif os.path.splitext(libfile)[1] == '.ext':
                                 os.remove(libfilepath)
+                            elif os.path.splitext(libfile)[1] == '.orig':
+                                os.remove(libfilepath)
 
     print('Done with PDK migration.')
     sys.exit(0)
diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index fae19ff..83e9c28 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -1060,7 +1060,7 @@
 		-library digital sky130_fd_sc_hd 2>&1 | tee -a ${SKY130A}_make.log
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
@@ -1109,7 +1109,7 @@
 digital-hdll-a:
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
@@ -1148,7 +1148,7 @@
 		-library digital sky130_fd_sc_hvl 2>&1 | tee -a ${SKY130A}_make.log
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			no-copy=custom/sky130_fd_sc_hvl/spice/sky130_fd*.spice \
 			sort=../common/sort_pdkfiles.py \
@@ -1190,7 +1190,7 @@
 digital-lp-a:
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
@@ -1224,7 +1224,7 @@
 		-library digital sky130_fd_sc_hs 2>&1 | tee -a ${SKY130A}_make.log
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
@@ -1255,7 +1255,7 @@
 digital-ms-a:
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
@@ -1285,7 +1285,7 @@
 digital-ls-a:
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
-		-techlef %l/latest/tech/*.tlef \
+		-techlef %l/latest/tech/*.tlef filter=custom/scripts/fix_techlef.py \
 		-spice %l/latest/cells/*/*.spice compile-only \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
diff --git a/sky130/custom/scripts/fix_techlef.py b/sky130/custom/scripts/fix_techlef.py
new file mode 100755
index 0000000..af2af2b
--- /dev/null
+++ b/sky130/custom/scripts/fix_techlef.py
@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+#
+# fix_techlef ---
+#
+# This script adds the missing statement "USEMINSPACING OBS OFF" from
+# the technology LEF files for Sky130.
+#
+# This script is a filter to be run by setting the name of this script as
+# the value to "filter=" for the model install in the sky130 Makefile.
+
+import re
+import os
+import sys
+
+def filter(inname, outname):
+
+    # Read input
+    try:
+        with open(inname, 'r') as inFile:
+            ltext = inFile.read()
+            llines = ltext.splitlines()
+    except:
+        print('fix_techlef.py: failed to open ' + inname + ' for reading.', file=sys.stderr)
+        return 1
+
+    # Process input with regexp
+
+    fixedlines = []
+    modified = False
+
+    proprex = re.compile('[ \t]*MANUFACTURINGGRID')
+
+    for line in llines:
+        fixedlines.append(line)
+
+        # Check for the MANUFACTURINGGRID statement in the file, and
+        # add the USEMINSPACING statement after it.
+
+        pmatch = proprex.match(line)
+        if pmatch:
+            fixedlines.append('USEMINSPACING OBS OFF ;')
+            modified = True
+
+    # Write output
+    if outname == None:
+        for i in fixedlines:
+            print(i)
+    else:
+        # If the output is a symbolic link but no modifications have been made,
+        # then leave it alone.  If it was modified, then remove the symbolic
+        # link before writing.
+        if os.path.islink(outname):
+            if not modified:
+                return 0
+            else:
+                os.unlink(outname)
+        try:
+            with open(outname, 'w') as outFile:
+                for i in fixedlines:
+                    print(i, file=outFile)
+        except:
+            print('fix_techlef.py: failed to open ' + outname + ' for writing.', file=sys.stderr)
+            return 1
+
+
+if __name__ == '__main__':
+
+    # This script expects to get one or two arguments.  One argument is
+    # mandatory and is the input file.  The other argument is optional and
+    # is the output file.  The output file and input file may be the same
+    # name, in which case the original input is overwritten.
+
+    options = []
+    arguments = []
+    for item in sys.argv[1:]:
+        if item.find('-', 0) == 0:
+            options.append(item[1:])
+        else:
+            arguments.append(item)
+
+    if len(arguments) > 0:
+        infilename = arguments[0]
+
+    if len(arguments) > 1:
+        outfilename = arguments[1]
+    else:
+        outfilename = None
+
+    result = filter(infilename, outfilename)
+    sys.exit(result)