I'll clear a few things up, The plane is balanced at 16 inches from the trailing edge of the wing not including the ailerons. I moved the fuel tank to the c of g and installed a mini servo for the throttle and a standard servo for the elevator so I could make the elevator link as strong as a 4 inch piece of piano wire. Try getting any deflection out of that! I also installed a perry pump directly behind the carb, so fuel is no problem. I have a 10-7 prop on a 3 year old la that came from the avistar I learned to fly with. Ok the method to my madness is to move the fuel tank to the c of g and place the servos in the nacelle for the stronger elevator link and the comfort that as fuel burns off my plane wont change it's balance. All I basically did is move the weight around a bit to make make (in my mind) a more user friendly air craft. I'm not looking for a speed demon, I'd get another shrike for that. I think I'll be buying me a new engine. I thought I would let you know that I have a set of kyosho ducted fans from a lear jet kit and am going to scratch build an electric version af the arrow (corporate style). I might be looking for some speed out of that. Thanks for all input. Bart (man)