My GP100 always had a smooth trigger, but I finally decided to try and lighten the pull some; my goal was 8 lbs DA. When I took the gun apart I was happy to find that there weren't rough edges or tool marks on the active surfaces. I buffed a few places and ordered the appropriate shims for the trigger, hammer and hammer dog from URL="http://triggershims.com/"]http://triggershims.com/[/URL]. I installed the shims today and put everything back together installing a Wolff 12 lb hammer spring and a 10 lb trigger spring (as per Iowegean's recommendations). Low and behold my SA trigger pull dropped 1/2 lb, down to 3 1/4 and the DA pull was just at 8 lbs. I don't know what it was before, my trigger pull gauge only goes to 8 lbs. So I'm happy about that, but my hammer still rubs on the left side even though I put both .002" shims on the left side. I know that I can judiciously shave the hammer .001"-.002" to get my clearance, but I was wondering if anybody had any other ideas (this is a blued gun so I don't want to cut on the gun frame).