I've just purchased a used 2017 LS 460 F-sport with the Height High option and it seems to raise the front about 1". Previously, I've owned the LS430 with the Height option and it raised the front by around 2", as I recall. How high should the 2017 LS460 be? If it should be closer to 2" does that mean there is a problem with the air suspension system? The vehicle has less than 16,000 miles.