Needing some help here. I removed the Torque Converter cover on my '77 750a with the intention of polishing it. After I removed the cover I pulled the torque converter too since it had slipped partway off (should this have happened?) during the process. I examined the shafts, etc., decided everything looked petty good and attempted to put the TC back on. Can't get it to go clear on! I can't tell if the rear splines are lined up or if I need to tap it or ?? Any help/advice would be greatly appreciated. None of my manuals say anything about it.