I am new to motored bikes. I bought a Chinese 80cc before I found this site. Because of what I have read here I have replaced the intake and exhaust studs and gaskets and the mounting studs and used Locktite. Don't know if I should do anything to the head gasket/studs??? I plan on coating the engine with a black ceramic reinforced paint (Black Satin Header Coating) from Caswell. I will make engine temperature measurements before and after painting to see what (if any) improvement there is. I will install the engine on an old hardtail Diamondback mountain bike. I am debating whether to replace the bikes centerpull brakes with linear brakes. Probably will. Any suggestions are welcome.