I just got this AK47 from some local shop, and it's beautiful. However, I can't use it out in the field because whenever I fire it, the dust cover pops right off. Also sucks because that's where the battery is held so it's not even something I could do without. If you see the pictures below, the release tab doesn't come out enough to lock the dust cover in place. It doesn't hold it down and the cover can pop right off with very little force. As you can see here, the cover is on all the way. Here's how much force it really takes to remove, not much at all. Has anyone seen this occur before? If so, how difficult is it to fix? Am I better off just selling the gun?