You can't use the Moroso gaskets with the Mopar valve covers. About the only gasket that works with the Mopar valve covers is the thick black ones from Fel Pro. Part number 1612.
The Mopar valve covers are designed wrong. They do not line up with the rails on the cylinder head so you end up putting the gasket in shear rather than compression. The Moroso gaskets tear when you put them in shear, they are only designed to work in compression.
Been there and done that!
