Hi, I'm having a problem with my BHP that I'm hoping someone might be able to help with. After firing several rounds this past weekend, I noticed that the slide wasn't locking back after firing the last round of the clip. It's a fairly new gun that hasn't been fired that much so I chalked it up to a break in issue. However, when I got home and started to disassemble the gun for cleaning, I discovered that the take down pin was stuck and wouldn't budge, and as a result, the lever part of the pin that locks the slide back was very stiff and not operating oroperly...which is why the slide wasn't locking back after firing the last round. Ive stripped this weapon down a few times since Ive had it and I've never had this issue. I don't understand what has caused it to be stuck. And it's really stuck. Anyone ever have this issue? If so, what's the cause and solution?