Gents:
There are three dowels I belive I am missing, at least I can't find them in the garage (aka, shed).
One of these (67-1236) serves to line the breather duct where the crankcases join. I can't remember ever having this during the first rebuild. It might have been there while I ignored it, then, fallen out some time during the current rebuild (perhaps, at the machine shop). The question is, do I need it? I suppose they put it there for a reason, as in, keeping oil from leaving through the outer breather hole.
The second (27-1589), seems to serve a similar purpose between the outer timing cover and the crankcase, however, the crankcase side, where this would join, is not shouldered, as in the other holes. Does anyone know what specific purpose this dowel serves? Again, do you think I need it?
The third (66-3074) goes between the inner and outer timing covers. Need I repeat the questions?
Any advice, admonition or incantation you can offer whould be appreciated. I identified ths "small" discrepancy just before closing the crankcase. So, now, that waits. I am going to feel truly stupid when or if one of you says, "Ah ha! That's why you spun a rod bearing, Richard."
Richard