thanx for the link but the problem is that the front lifts up when i excellerate and the front tires dont grip..causing them to spin and baloon..i think i need to stiffn up the rear to help keep the front down.im thinking heavier wt shock oil and a bit of preload on the springs..the .30 has massive power and torque..ive just put a 16 tooth bell on ..i'll see what happens.. im not just on the throttle either , cheers