Ha ha ha! I'll have to remember that terminology " a love tap" next time something needs belting with a hammer. When my son leaves loose bolts I say "tighten that, but don't swing on it" as he has an uncanny knack at shearing things off.
I think the gasket is about keeping water out, I always use a small dry paintbrush to sweep all the sh** out around the drive train when the cover comes off. Amazing how it builds up