Thanks Flanno: Ran3 tanks through the zilla first up, 2 with MRI oil and heat cycle, running 25% NEO +,( great fuel) third tank was a little more aggressive with short 1/2 to 3/4 throttle for about 3 seconds Seems to be coming along very nicely. Will give it 3 more tanks with 1/2 to full throttle bursts and then a mild track session with increasing full throttle. Now I know how Luke Skywalker felt with a light sabaer in his hand. What a weapon!! Thanks again for the input from yourself a Magpie-121,greatly appreciated. will keep you updated with track performance.