Anyone having an issue with their Tolltags not working on their Model S? I am having problems getting the Tolltag to work on the Tollway (I live in Dallas, Texas) and in our gated community where the signal isn't picked up by the gate-opener. I've been told it is due to the electric current around the car. I've tried placing the stick-on Tolltag in various places. The only one that registers, though not reliably, is on the panoramic roof.