The remedy is to re-sync the motors. Drop the bunk down completely. Hold the switch down for two-three seconds after it reaches the bottom, (and hopefully both motors take it all the way down). Then, raise the bunk all the way to the top, without stopping or pausing, until it's at the top, and hold the switch for two-three seconds.
Also, remember to hold the switch for 2-3 seconds after each time you raise or lower the bed.
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