Yup, sprung hub disc helps with the rattle. Some transmissions rattle very little, some like crazy. Higher idle speed at 850 helps too. Had buzz saw sound on the old trans and engine. New trans and engine don’t have it. In my opinion it’s the Valley drain tube vibrating. I would isolate the tube with a rubber hose over it so it can’t hit the block. Or, just remove it altogether. If the secondary drain hole has been drilled per the service infomantion bulletin it superfluous anyway.
H
