I've had my Model X for about 9 months now and I recently started noticing some fluctuations in the range meter. This afternoon I parked my car with exactly 200 miles of range. I got out to plug it in and the range meter now indicated that it had 197 miles of range. Also, a few days ago, I had 60 miles of range, and while I went to get my coat (~2 mins), my range meter changed to 52 miles of range. Finally, I have also seen the range go up, I parked the car with 110 miles and 40 minutes later, when I got back, the range was 118 (it was not charging). I have only noticed these discrepancies in the range meter when the car is parked. Has anyone else experienced this with their model X? Is this something I should be concerned about?