Treadmill slows and then stops periodically while using it. I'm sometimes able to get it to start up again by lifting or lowering the inclide. When it starts up again it usually will rev up to a higher speed and then finally resumes the speed I have it set at. This problem has been slowing increasing in frequency...with it now being almost impossible to go longer than a few minutes before it slows and/or stops. Please advise what could possibly be causing this problem and what parts I need to order to fix it. Thank you for your help and I look forward to hearing back from you as soon as possible. Ken Hendon 309/343-0222