I have 3 cars with thermoquads and the alcohol in the fuel used now is a solvent and will eat through the factory epoxy, jb weld, moroso epoxy, seal all and probably most other glues and epoxies. Believe me I know. If you put the bowl over a 2 lb metal coffee can fill it with fuel and leave it for a couple of hours you will see gas leaking out. The only thing I have found that is mostly resistant is marine tex grey epoxy. I have repaired at least 6 bowls for myself and others that were told that the thermoquad carb is a lost cause. All my cars are running ok and have had no leaks for at least 2 years.