Hello Lou,
Initially the Delica profile modification design was a straight swap of scales and used ALL stock hardware. I called it the NoMOD Delica/Lil'Para. Then the profile design was further tweaked to more closely resemble the PM2 which included a choil. That required the modifying of the stainless steel liners slightly. A small amount of the nose on the liners needs to be ground off to allow the liners to nest into the new profiled liner pocket. I call this design the GrindMOD Delica/Lil'Para.
Fast forward in time and based on the popularity of the GrindMOD Delica/Lil'Para over the NoMOD Delica/Lil'Para... I no longer machine the NoMOD version... I only machine the GrindMOD version.
Check out my FLICKR page... you can see several different GrindMOD Delica/Lil'Para's as well as my other work...
https://www.flickr.com/photos/mica17/
Steve