I'm restoring a '74 Spider and in replacing the fuel filter near the Spica the old gasket came apart when removing it. I have the filter I got from IAP but neither IAP nor Vicks in Fort Worth have the rubber gasket that seals the canister against the upper mount. Does anyone know where I can get the rubber gasket? Hard to believe the filter is easy to get but not so for the gasket. Maybe my only option is to make my own gasket using Buna-N nitrile rubber?