ORIGINAL: skd11
I bought a TT91 and messed with it for about one and a half years. I sent it back to TT , used the choke plate, tried all different fuel with no success. The way I finally fixed it was to buy an OS and throw the TT in the garbage. It's complete junk. I have a Magnum .61 that is perfect. That is my advice.
Too bad, you could have let us help you troubleshoot the engine. Shame you threw it away, that is one really powerfull engine.