I know the GEMS does not "need" a gasket between the inlet manifold and the lower plenum/ trumpet section. But on the other hand is there any harm in fitting one? Whenever i've unbolted the section (ok, so only 3 times) there seems to evidence of the inlet galleries talking to one another (though not that there is leaking to/ from the outside) ie i can see a brown oily film between galleries, where there wd only have been blue hylomar on assembly. I though I could nail it with the ERR6621 gasket ? Thoughts?