I'm leaning toward thinking it might be something like that. I think it goes away once it warms up a bit. I don't think the head comes off this block without dropping the whole engine out the bottom. As well, cam alignment is a real process and involves special tools. Makes my 02 mini look like a cake walk. There is a bit of vacuum - push / pull going on when you remove the oil cap, btw. The only way to know for sure is to pull the head.
Can any of you guys tell me if you see a slight misty vapor in your coolant reservoir when you pop the cap off?
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