When fitting the crankcase oil seal is it fitted level with the crankcase, or pushed up to the bearing?
Fitted flush to the outer of the case in my undisturbed 59A7SS
However the seal works not on the crank drive shaft, but the distance piece fitted chamfered side in...if the oil seal is not slush to the crankcase outer but somewhat lower, it will still act on the distance piece...but too far in and the drive side bearing will chew it. Stick to the factory, on my original it's pegged at noon,3,6 &9 by punchmarks, but then I have the original steel backed oil seal still fitted.
Thanks peterg123. I realise it's very late but sorry about that. Much appreciated
Barry