I recently bought my first Saiga 12 and was having problems with the trigger not fully resetting itself. When I fire, the round will eject and cycle a new round in to the chamber just fine but the trigger just doesn't always reset. I figured doing the trigger conversion would help but it hasn't. I've fired everything from low grade to high grade ammo and it's happened with all brands so I don't think it's just the ammo I'm firing and it'll pass a functions test every time. Any advice?