I have a Mosin 91/30 that I have cleaned the hell out of the chamber and bolt but when I push the bolt handle down it catches about 1/2" down and when I lift to cycle it it catches again in the same spot. I have brushed the chamber with a 12 gauge brush and used a dental pick and qtip with Hoppes No 9 to detail it. The bolt has been taken apart multiple times and cleaned with mineral spirits and detailed over with Hoppes and brass brushes. It is a 1943 Ishvek make. Is this something that might be a manufacturing problem, or common to these rifles? The youtube videos I have seen have a smooth action the whole way and just say to reclean looking for cosmoline. Is this something I have to live with or should I head to a gunsmith?