Gasoline smell in cabin

The Mr Gasket regulator is just a "dial a jet" device that has a bunch of graduated holes on a dial that you turn to choke down the fuel path cross section. You could do the same with a carb jet in the fuel line, or better: a 2-4psi Facet style electric pump. They work great on Edelbrocks that like to boil the gas out the bowls on hot shutdowns.