Doing a gasket replacement today on the dome. I have it off and cleaning the surface. My Rutland on the base is pretty grungy, what with grease, creosote, etc. Any way I can clean it while I have easy access with the dome off? Thought about using some "Natural/Green" household cleaning product. Not too worried about any chemicals remaining on the gasket (I'm sure with the first firing they will evaporate), I just don't want to harm the Rutland gasket. Any suggestions?