A friend of mine recently got a Nitro Slash and he can't get it to idle correctly. It hasn't been broken in yet because as soon as it starts the engine revs up not super fast but fast enough to get the wheels spinning fast. The idle gap is at factory settings at about 1mm. And he's using Traxxas 20% nitro 20% oil. I have absolutely no idea why the car is revving up too much, but I don't have very much nitro experience. So any help is appreciated. Thanks in advance