I bought this bike off a guy for $100 looked brand new. no scratches, tires werent worn anything. It had been sitting in hs garage for close to a year. I got it to run within five minutes of playing with it, but it will not idle. As far as i know it is a 50cc. another thing too I think it is the panterra baja 50. Is it supposed to be a 4 speed? I can click through 4 gears. first and second are good but third slips and makes a racket and fourth is good.. other then that it rides real good. can anyone help?