Ok guys I have the aresti with the 61bb tt pro all dialed in!The plane originally had a 61bb TH but the plane wouldn't idle down very well.The TH produced some pretty impressive #'s.The plane was clocked at127mph once,119 mph three differnt times.the fuel used was 15%Omega,11+7APC & no baffles in the stock muffler.The TT doesn't seem to wind up as well but still very impressive.Got alot of pull to the left at first put in alot of right trust.Solved the problem.It also needed some down trust to get the plane to track better inverted!