Firstly, I know that these sleds don't get great gas milage to begin with, but, my last 2 runs have given me aprox 6 mpg. Should the oil arm be set to the stock setting, I'm constantly fouling plugs and having to clean my rave valves. I had it tuned by a professional in Nov and he said I should get 10-12 mpg, carbs and rave valves were cleaned and oil setting adjusted. After getting it back it still smokes like a b&^%*&% all the time. Any advice or suggestions would be greatly appreciated....Thanks