I just got an urban classic 50. It has a couple glitches, and I haven´t been able to find any help online, that is tailored to tank urban 50 specifically. When it runs, it feels as if either the rear wheel is rotating wonky, or the motor isn´t turning properly. I don´t know anything about scooters, and am lost trying to diagnose this. The runs strong, and is a bit faster than what I have seen listed on this site. I just worry that this issue will lead to bigger and worse problems in the long run. Any help would be appreciated. Thanks.