With the engine oil change decided to renew the o rings on the crank case oil feed .Threw the old rings away, as you do ? and ordered up a new pair . Am I missing something here as the rings appear to be 3/8 O/D and the recessed holes are 11/32'as near as I can tell ?
Just found out that there are two sizes the small ones are for early and the larger for models with the added rocker feed !