Cycle the bed all the way down holding the button 5 more seconds after the motors have stopped running. Press the up doing the same thing, hold button down for 5 seconds after motors stop, should be okay after that. The system counts motor revolutions to stay in synch, the slide works the same way, never stop in the middle of a cycle as it gets the motors out of synch.
Dave & Myra
One day your life will flash before your eyes,
make sure it's worth watching!