Re: My 2 stroke is 4 stroking..
I used Permatex 97b, since it's rated as being "gasoline resistant." But when I ordered a new jet from SBP, I decided to get a pack of their carb o-rings (made from gasoline resistant Viton). The Permatex I'd put on before was all gummy and not really stuck to anything anymore so much as just kind of "slimed" on.
The o-ring works better than the Permatex did even when it was new.