I have replaced all the rollers, the console, and the resistance motor, meaning that I not only bought this machine but have invested another $500 trying to keep it functioning. I need this type of exercise because of health problems, but am INCREDIBLY DISAPPOINTED both with the machine and the response from NordicTrack. The new console lasted 4 weeks before its screen would frizz out after 3 - 10 minutes. I need an elliptical, liked the stride length and incline, but WILL NOT buy another NordicTrack.