I just had the Vais system installed in my ES 350. I am having a problem where it plays fine at first but then I constantly get static interference as if I were driving through a garage. I don't know if it's the Vais, the antenna, or tsb (SB0042-09 - Audio System - Satellite Radio Inop Until Ign. Is Cycled) with the factory nav. I really liked the Vais system because it integrates perfectly with my unit. Can anyone offer advise on how to remedy this?