There is no gasket as the other post said, just a special glue. I would find a torque wrench and re-seat the bolts on the camshaft cover one at a time to see if that cured the leak or at least reduced it to acceptable levels. You need a set of tools that lists for about $1000 to properly remove and re-install the camshaft cover because you need to hold the cams in proper relationship. Cleaning the old glue requires solvent, plastic razor blades and lots of patience. The dealer must get a good bit of $ to fix it. The torque according to the pocket data book, TP0302207, is 17 Nm for the camshaft carrier cover.

The flame trap is also a candidate for service. It is in a housing with a bayonet style cover. The housing is clamped into top of the big rubber duct feeding the throttle body. The cover is attached to a hose coming from the breather box up through the runners of the intake manifold. If you look at the cover from the pasenger side of the car you need to turn the cover clockwise to release the bayonets.

Good luck, keep us posted