I tried to fire off the Nailhead in the RPU for the first time last week: ... and spewed oil all over the shop floor. I could even see it running down over the pressure plate. Today I pulled it apart and look what I found: The machine shop that assembled the engine forgot to button it up before bolting on the flywheel. You can see the oil pump drive thru the big hole at the upper right. And the lower hole is threaded for a plug. But what's this hole to the upper left: Also... I'm an amatuer when it comes to this stuff, but shouldn't there be some sort of seal behind the cam, too? Do the little right and left holes get soft plugs? Does the holes below the cam get some sort of flat-headed plug (that doesn't hit the flywheel)? The leak(s) also marinated the clutch disk. It was brand new, never run. Am I looking at a new one? Thanks in advance for any advise you can give.