I'm 14 years old. I live in Ohio, but I go to a military school in New York. I come home every summer and work. I got a great deal on a Puch moped. Only $125, runs great! All I need are turn signals, kickstand, and a speedometer. Only one this wrong with it. When I am riding between 5-25mph it makes this screeching noise, then stops when I go really slow or super fast.