Preparing for our first trip this weekend with the X, so I thought I would try and install the hitch receiver which we are planning to use. Seems like it should be pretty straightforward, but mine does not just click in like it is supposed to. It is fully seated in, but the little ball that should trigger the latching is not triggering. If I try to seat and re-seat it several times it will sometimes trigger, but usually it is as I'm pulling it out. Once every 10 tries it will latch and hold while seated, but the knob does not fully turn to show green at the white dot. And the knob doesn't pop back in, it is still pulled out, so I cannot turn and remove the key. As the manual says, this means the receiver is not fully locked in. Anyone one had this problem? I am going to take it in to the SC tomorrow to see if they can get it to work correctly. I really hope it is a problem with my hitch receiver unit, and not with the socket in the car. If it is the receiver unit, I'm worried they will not have a spare at the SC and will need to order, which means we will have to fallback to the minivan for our trip.