I had the valve cover gasket replaced on my 1992 Accord EX about 4,000 miles ago and now all along the lower part of the valve head cover itself, I notice oil that looks kind of fresh (dark black). Any ideas what could be going on? Also, my timing belt, water pump, balancer belt, ac belt and alternator belt were replaced about 10k miles ago and now there seems to be an oil leak around the camshaft area and I heard that oil in this area can affect the timing belts. Is this common or unusual? I've attached some pictures to get your reactions.