Never had that type of problem with any AK's I have owned and several of them were new.
I would say shoot several hundres rounds through it and check to see where if any wear points might be, this might give you a clue as to whether you may need to do some polishing of the areas.
I would say shoot several hundres rounds through it and check to see where if any wear points might be, this might give you a clue as to whether you may need to do some polishing of the areas.