I know there are a bunch of related threads, but I couldn't find anything to solve my problem.
I was messing with my Noveske the other night and noticed that my magazines weren't seating unless I used more force than should be (or used to be I'm pretty sure) necessary.
I only have PMAGs, but both the weapon and magazines were all bought since November. I have a little under 1,000 rounds through the AR and this happens with magazines with 2-30 rounds. 1 round loaded and empty works just like normal. I've never noticed this problem before and really think I would have by now if it had always been this way. The weapon had been cleaned since it was last shot (1-2 months ago) and lubed with Militec which I've been using with great results since getting it. I also broke it down and gave it a more thorough cleaning last night after noticing the problem. I don't have access to any other mags or uppers to switch out, but I've tried 4 loaded and 1 unloaded PMAG. I also unloaded one of the full ones and then it worked fine. Most of mine are Maglevels, so when I seat the loaded magazine, the body moves up into the mag-well but the rounds don't move at all. And its completely fine when the bolt is locked to the rear. The only modification I've made to the rifle is the addition of a Magpul BAD.
Any ideas what's going on?

