I just put on a pwk28 on my quad. Now From a view of the stock i could go about, lets say a good 3-4 ride with stock carb and a full tank of gas and empty the tank. Now since i put that pwk on. I wasnt even riding my hardest and i was out for mabey 1 1/2- 2 hours and i ran out of gas! How do i increase gas milage??