I my name is Emil from Italy, Ok whole of you with xl 50 th i need your help. I got the some bike , i am in Los Angeles i am having jercking problems at low speed in 1st and 2 nd gear does anybody knows what this problem is? I am going crasy i love my bike but its unrideble, please if anybody out there knows something about this problem let me know it will be a karma rider, thanks.