Hi all thanks for the input. My son's tiger broke the plastic casing where the rear idler wheel fits so that will be stripped out and messed about with until I have found the best way of putting cheap speed control into it. He now has mine. I am seperating from my wife and buying my own house so my consoling gift to myself will be a tamiya full option leopard and a pershing. Cant wait. Once ive finished the three projects I will put details on this site. By the way the new back garden will have an area dedicated to off road tanking. See you later. Mike