I've had my 2013 Wrangler Sahara since Sept 2012. The inside support hinge on the tailgate has snapped 3 times in that period. It does not appear to be able to support the weight of the tailgate if the vehicle is not completely level. Jeep is more than happy to repair at N/C, but has anyone else seen this issue? Dealer says they've seen this but is Jeep looking at a permanent fix?