diff --git a/aggregator/pom.xml b/aggregator/pom.xml
index 1dd0fdf6168..470bc93f6e8 100644
--- a/aggregator/pom.xml
+++ b/aggregator/pom.xml
@@ -30,7 +30,11 @@
     <version>21.10.0-SNAPSHOT</version>
 
     <properties>
-        <rapids.shade.package>com.nvidia.shaded.${spark.version.classifier}.spark</rapids.shade.package>
+        <!--
+        we store ASM-relocated packages in /spark3xx parallel worlds in dist
+        and they are auto-deduped using binary diff
+        -->
+        <rapids.shade.package>com.nvidia.shaded.spark</rapids.shade.package>
     </properties>
     <dependencies>
         <dependency>
diff --git a/dist/scripts/binary-dedupe.sh b/dist/scripts/binary-dedupe.sh
index 2e9dc35efb6..882831e354b 100755
--- a/dist/scripts/binary-dedupe.sh
+++ b/dist/scripts/binary-dedupe.sh
@@ -66,7 +66,7 @@ echo PWD
 # it's now safe to delete duplicate .class files from the original locations
 # don't use rm */% because globbing is broken for files containing $
 for shimDir in $SHIM_DIRS; do
-  xargs --arg-file="$SPARK3XX_COMMON_TXT" -n 100 -I% rm "$PARALLEL_WORLDS_DIR/$shimDir/%"
+  xargs --arg-file="$SPARK3XX_COMMON_TXT" -P 4 -n 100 -I% rm "$PARALLEL_WORLDS_DIR/$shimDir/%"
 done
 
 mv "$SPARK3XX_COMMON_DIR" $PARALLEL_WORLDS_DIR/
diff --git a/dist/unshimmed-base.txt b/dist/unshimmed-base.txt
index 27aba8c222e..042002b193a 100644
--- a/dist/unshimmed-base.txt
+++ b/dist/unshimmed-base.txt
@@ -2,7 +2,6 @@ META-INF/DEPENDENCIES
 META-INF/LICENSE
 META-INF/NOTICE
 META-INF/maven/**
-com/nvidia/shaded/**
 com/nvidia/spark/RapidsUDF*
 com/nvidia/spark/SQLPlugin*
 com/nvidia/spark/rapids/ExecutionPlanCaptureCallback*