What does the oil look like? Got any creamy beige buildups anywhere? If not it sounds like maybe a small weep if anything while the engine was running was burning and going out with the exhaust and after shutting down, the accmulation in a cylinder was blowing out through the exhaust and the cylinder was clearing. The PCV/rocker area collant is strange to me though... The good compression numbers are encouraging but checking the crank bearings may be in order at this point. If EB is around he could tell you his highly regarded opinion on this and what to look for in detail with the bearings. EB has not been on the board as much lately as he used to be but maybe post a new thread asking him by name so will flag it for him if he scans the threads. Hope someone else chimes in on this. If you don't get some more help here, try the Pirate board. I think things are a little more active there right now. Good luck. Sorry I cannot help you more. If you get help on the Pirate board maybe post it here so we can learn also.