Percolation? Heat soak? Don't drive during summer??

No i dont have one on there now, just the spacer. The carb doesnt get very hot, but I could add a shield. Sucks that aluminum wouldn't be a good heat shield or I could try to make one.

It might help to try one. I don't care what goofus says up there ^^^^^ LOL Ethanol can certainly haven an effect.