Interesting, the clutch drawing shows half a single track and half a double track clutch.
Hmm ...
Rick ,
Maybe the upper half of the drawing simply has more 'cutaway' to show what's suppose to be , as the inner sheave or face has a thicker base flange and wall configuration than the outer .
Does that wheel pulley drop to the center of the wheel a bit , once mounted ?
That would explain an 8° deviation of the attachment lip .
interesting .
Nice find , Tom .
Pete .