Got a problem with the #3 plug tube getting oil leaking into it. The motor is a D15B7 in a '95 Civic LX. I replaced all 4 of the seals and the valve cover gasket. Cover went back on evenly. Do Civic valve covers ever develop a slight warp that could cause this? If so, where's the best place to get a used one? I snugged all 4 acorn nuts evenly when I put it back together. The mating surfaces on the valve train were smooth and clean.

 

id get one from a junkyard if you wanna get a new one

 

pull valve cover off and double check the tube seal if they dont go on perfect i will do that.