There is a big chance when people re-installing the striker parts, the slide cover particulary, they simply push it hard without holding/ pushing the striker housing deep enough, since all parts related mostly made by plastic, the slide eventually/forcibly will be sit into its half moon, but I am sure it hurts either one or both of them. IF the half moon and recess are new/ good condition, the slide it will not catch the frame regardless it is 90 / 45 degree angle because the main thing is the "clilck" between half moon and its recess. I have seen on youtube, someone reinstalling the cover by holding the striker housing with hand while he pushed hardly the slide to back in its place; it breaks either/ both of those. Because of that, on youtube, all the "new from the box" p10c are perform almost perfectly 200 rounds...500....1000...2000...2,500...5,000 rounds etc.... (Hickok, MAC, iraq Vet, Honest outlaw, scooth, etc......)Is one/ two...of them paid by CZ maybe yes... but not all of them for sure; and many others p10c owners who never playing around with the striker parts or they do it properly, have never experinced this particular issue AT ALL. Again this is only IMHO.