I bought this bike 2nd hand. A previous problem I had was my speedometer and odometer being off. The fellers here recommended speedohealer and it worked like a charm. I just went out with some friends this weekend, all different bikes. 3 of them topped up on fuel for just over 6 dollars where i was 11 dollars. Can anyone suggest what i can look at for possible reasons, or do you think the mods from the prev owner is likely the problem? I'm not mechanically inclined in the least so I'm curious. Thanks for any thoughts or tips!