I bought a new G17 gen 5 last October. I have been to the range 6 times shooting about 150 rounds each time. My problem is the main upper pin moves out about 1/8" every time. I tap it back when I get home and it's ready to go again. I also have a G43 and a G26.3 that I shoot about the same and have no problems with then. Has anyone else had this problem?