having trouble downshifting to 1st and 2nd gear. is this a common failing on this bike. Also i stopped at a light and when i went to takr off the bike died, when i tried to restart w/starter the lights went out and didnĀ“t come back on. so i waited a few minutes and they came back on, so i tried to start again and same thing happened. however it did start w/compression going down hill. any suggestions? thanks byron