For those of you who never use your windows, like myself. Operate them once a week or so, or you may find some day that the door handle backing plate insulation has loosened and is interfering with the window regulator causing the window to go up 3/4's of the way and then go back down. And if your really like me your over the 50000 miles and you may have operated the windows 10 times total and it's going to cost 580 to replace a window regulator that again may have been operated 10 times at the most. As an aside, what's a good contact for Tesla to discuss this with. Any ideas?