You're going to have to tell people what's goin on if you expect help ? You're jumping all over the map here. How much time is on the trk. Are the carb settings at the factory set. Have you ever run nitro. I think you started all this over a month ago, if not mistaken, on a couple of threads. You've apparently gotten yourself lost, as well as eveyone else. Sit down and read the manual.

Pick this up and remove the stone filter, put between fuel tank and exhaust.