Loving my wife's new-to-her 2011 Pro-4X. The only problem that we are having is with locking the doors with the key fob. You have to be standing in just the right spot, press the lock button very hard, hold it down for a couple of seconds, and hold your mouth right to make it work. I've tried both key fobs and replaced the batteries = no change. The unlock button works just fine. I can't figure it out. Am I missing some trick to locking the doors with the key fob?