RE: Thunder tiger pro .46 loses power
I have 2 TTpro 46 and on both of them I had a similar problem. I am not sure of its exact name but the base of the high speed needle valve worked its way lose. There is a metal washer at the base that doesnt make a good seal on both of my engines and it was losing fuel around there. I put something to seal it and tightened it down and it works fine.
Mine was doing almost the exact same thing yours is. It would crank up, run OK, then lose power and sometimes deadstick.
Also 4 turns out is way to much on that engine. I think mine are around 2 turns out.