One thing I noticed when I did my valve cover a couple of weeks ago is that the bolts are positive stop. In other words, they have a shoulder so you can only tighten them so far. The thing that keeps pressure on the gasket is the grommets under the bolt washers. If you don't replace these and you have seepage after swapping the gasket, that is most likely the reason...
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
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