I have a 9 year old Sierra electric massage table that is in perfect condition and has worked flawlessly from the day I bought it. The motor finally wore out. I contacted Sierra about obtaining a new motor. They were extremely helpful. They explained that all of the components have been redesigned over the years and one part may not be interchangeable with the others so I chose to buy the entire kit consisting of new motor/actuator, foot pedal, control unit with power cord. It arrived in a few days, and took about 15 minutes to change. I am extremely happy with Sierra Comfort.