Whats wrong with you guys a little nitro doesn't hurt any body. BUT you have to be careful that you don't go to far eg 65% nitro is a retro step. Now the throttle arm thing. When I have problems with throttle cable runs I use the Dubro 4 stroke throttle arm thingy. (Check the catalogue). It is easier and for me as cheap to buy as making my own hence the reason for using same. Old Fart the 30 is used in Texaco a fuel economy contest (fuel allowance is dependannt on weight of a/c) hence big nitro quantities are self defeating BUT might be an interesting experiment. Playing with fuel mixes is but one variable in the overall performance chase and for those inclined lets out the inner evil scientist / chemist in all of us. No flying, the eye and family does today are the priority, good flying to all those lucky to be out and catch ya later