I just got my rebuild completed. Replaced everthing: 4 mil, new ported stock cylinders, Vforce 3 reeds and cages, 34mm carbs, new transmission and Barret clutch and basket, cool head with domes able to run premium pump gas, stock toothed sprockets. My problem is the bike doesn't seem much faster than it was before. I haven't done anything with the timing, should I? Any ideas would be greatly appreciated. thanks in advance