I just got a new Romanian 75rd. AK drum from cope's, and today's the first time I got to use it. I loaded 75 rounds in it, then started shooting, and I only got about 5 shots off before the gun stopped. The drum didn't push the next round up far enough to feed. I messed with it for quite some time, pushing on the lever, shaking it, turning the gun upside down, etc., and it never did feed a second round the rest of the day. I pulled the cover off, and I don't see what could be messing up on it. I do believe this drum is new too. There just doesn't seem to be enough pressure to push the rounds up far enough to feed. Any suggestions on how to fix it? I'd really prefer to not have to try and get a refund, but I don't want a $125 paperweight either.