Report "Have Precor 9.33i treadmill, speed control is eratic, starts off slow, then preset speed to 2.0 mph, seems labored does not speed up very quickly, then overshoots and exceeds 4 mph or greater, then slows back down. The belt moves easily by hand, has been in service for several years, used several times a month, Has been in same location, same power source. Appears the speed control module, or feedback circuit has issues. Belt tension is not loose,"