Thanks to Knukkel
I was able to borrow a knucklehead engine for a while!
I will take it apart, measure and model all the parts in CAD,
and then put it back together again...
on the right crankcase.
the measurements taken earlier and a copy of the original
1953 factory drawing of the gearcase cover gasket that I
found on Ebay years ago, I made a CAD version of the drawing
, fullsize with all the factory dimensions, tolerances and remarks.
(Mail me if you want to buy