I upgraded the bb VGEBY1 Bottom Bracket, BSA-Innenlager Bike Square Taper Bottom Bracket for Fat Snow. Problem I've had since I purchased the bike 6 years ago is the threads on the non drive side. Never screwed in easily even when using the YST setup. I can't screw the cup all the way in on the new bb. Drive side screws in easily. I think I have to chase the threads. Can someone tell me the parts I would need.