I recently picked up a Legion Saiga 12 030 Taktika and have been having some magazine fitment issues. Out of the box the factory 4 rounder had to be slapped once or twice with a good amount of force to get it to lock once inserted into the magwell. I didn't think too much about it at first but after picking up 2 factory 8 rounders and 4 SGM 10 rounders the problem has persisted and I'm not 100% sure how to remedy it. I've inserted and removed the mags a good amount to try and break them in but that has not seemed to help. Any known quick fixes for this? I'm assuming I will have to sand the mag