Awesome info Rumblefish!!!

I'm stripping mine down in two weeks. Good thing I looked, I just assumed it was good to go!
The "section" of o ring is contradictory to a full stat-o-seal no? (just needs a portion of area around the bolt shank sealed) I assume under the head bolt washer is a machined groove that doesn't fit tight to the shank of the bolt? A section of o ring used to block that area so the oil feeds directly into the tube?

Once you repaired did you take a good look at the oiling? Yours only lubricates exhaust rockers? Do the intakes require oiling if no pushrod oiling? I guess I'll be digging in!?! lol

Thanks for the pic and the writeup, it helps!!!