Greg, I’ve been playing with this PM45 off & on for a few days and think you might be right about the stricker block being the problem. How big a deal is it to remove & change out. I was thinking of swapping the block in my p45 to my brothers pm45 to see if that resolves the problem. Forgot to mention, my P380 seems to be functioning fine now. I believe it just may have needed more breakin shots. The PM45, I have dry fired cycled approximately 500 times & the striker staying out seems to be intermittent. Going try and get to the range today and give them both a good workout! Weather not the best here today!