ok i'v had this bike for like 3 yrs no major probs last week my nieces came over turned my key on while thet were messing around in the garage and i didnt notice so 3 days later i go out to go for a ride and my batts dead so i jump it and take off now when i get into 3rd gear it starts falling on its face and all my lights go dim any body had this prob or know were i should start looking any help would be greart