The other day i helped someone move a queen size bed into their house and had to keep the tailgate down to fit it in the bed of my truck. On the way to their house i hit a nasty bump that caused my tailgate to jump up then slam back down. Now the handle has no tension on it and the latches are stuck in the open position so it can't keep itself closed my bed cover has too with a bungee cord for a little extra safety. Does anyone know what could be causing this? Your help is greatly appreciated.