Anyone know of a shop (or stealer) qualified and equipped to check the pressure on my DRC? I'm in southeast Mass, so in the Boston/Providence corridor, willing to travel a bit, eastern CT, southern NH would be kind of my limits.

Mattie Imports is the nearest Audi dealer, and while they're nice, I do not have a great deal of confidence in their ability to service odd-ball stuff like DRC.

I've had my RS4 since September, and am quite happy with the DRC. No evidence of any problems, but would like to get the pressure checked, to do what I can to be sure it lasts a good long time.