My Norton group has been cussing the ethanol bearing gasoline because it is swelling the gas cocks shut. I was in Tulsa and visited with a vendor I used to trade with. They cut custom gaskets from all materials. The lady said she thought that there was something because they make fuel pump hoses to take it. By the time I got home she had emailed me that Nitrile will do the job. I have sent a post to Walridge motors asking him to consider having seals cut and selling them. I found my Clinton carb bowl gasket had grown 1/4" dia. when the JB Weld let loose and the bowl dropped into my hand. Today was Helicoil day. FWIW Keith (trackfodder) Williams 
