Hey,
My sister has a Momentum 350 and she was sitting on the couch when she heard a loud noise coming from the garage. When she went out there the power bed had come down and it was crushing the metal file cabinet. She said she raised it back up then called me. I took a look and found one of the chains were loose and the track was bent. I thought it was strange and fixed it checked it out and every thing seemed fine. A few days later she woke to hearing her rear bed motor engage and come down under power? luckily she was there to hit the switch again and stop it before something was damaged. I told her to call customer service and let them know.

My question is, has anyone else had this happen? if so what is the fix?