I ordered the Valor tire monitoring with my new Savannah. Just put the 1st 6000 miles on it. The valor system did not work most of the trip. Getting the readings on the front tires but the back tires are very flakey. Spent a lot o time on the phone with the factory rep who was very responsive. All boiled down to getting the antenna in the right place to get the signal. On he last day I moved the antenna to the driver side corner of the back bumper, under the bumper. Then I as able to get a reading from the rear tires about 80% of the time. Does anyone have experience with this and have a solution?