I've got a problem with my P-11. I field stripped it like I have a hundred times. But when I put it back together (again like the hundred times before) the slide will not close all the way. The takedown pin is all the way in so it's not stoppiing it. I swear I have no idea what is causing this problem. Anyone ever have a similar problem or have some idea what's going on? More importantly, anyone got a fix for it without having to send it in or take it to a gunsmith? Going to the range tomorrow and kind of wanted to take it. Thanks in advance.