Took a closer look today. Layed out a 1/8 alum circle to cut that will fit inside the ring with 4 machine screws. Should be simple, not as simple as cleaning out the black varnish coating the bottom though. Got a light inside and looked thru my borescope, ugly! To trial the engine I think I will use another (clean) tank and slip a bald ended hose over the fuel prong on the engine and secure with a hose clamp. In the end I will get a 3/8-24 male fuel fitting to fit the outlet port on the side of the fitting where the gage might be fitted if I ever find one! Thanks Tom
