Hey all, I have had this 20SF since last fall (RVH Prefix) and have 350 rounds through it. All handloads, Mostly 180XTP's 9.0 longshot 1250fps, and 9.5 Longshot 1290fps. I have been using the stock RSA half the time and a ISMI 22lb on lonewolf dist SS guide rod the other half. I just returned from a camping trip and put 50 rounds of 9.0 longshot/180XTP through her with stock RSA. I have always noticed the point of contact where the slide meets the frame during full rearward slide travel. knowing that there is not a lot of surface area where they meet as well as the power of this cartridge. I looked again this morning when I was cleaning it. It appeares that this area on the frame just forward of the fwd frame rails is taking flogging. it is exponentially worse than only 50 rounds ago. The LH side is worse than the right with the crack, but both sides have the polymer showing stress. I am looking for ya'll's advice/counsel on what to do with this. Start the "call Glock process"?, or just shoot & monitor this area of the frame? I will try to get a few more pics. Thanks, Pat Wanna kill these ads? We can help!