My 06 Heritage was delivered with a full tank of gas. Ive managed to get 110 miles with it on the few good days Ive had to ride it. Well, the gas guage is already lit and there is less than a 1/4 tank left. I was expecting better gas milage. Is this a break in thing or should I be concerned. My riding has been all back roads, under 45 mph and Ive been taking it easy because of the break in period. The only mods to the motor are stage 1 and SE 16 guage DB exhaust.