We noticed what we thought was a transmission fluid leak and were referred to Williams Detroit Diesel in Phoenix, AZ. They checked and it was an overfill/overflow issue that had caused a little mess. They said it was a fairly common issue from the factory.
We had also noticed that the motorhome was not tracking perfectly straight while going down the road (they call it 'dog tracking'). It was sort of pointed to the left, at an angle. Williams was able to correct the alignment problem and they also performed the initial 5000 mile filter change.
They were very professional and provided a quick turn around (1 day). Although they are first come, first serve, they are open until midnight. We are satisfied with the cost, but hoping that we don't visit for transmission service for a very long time.
Willimas Diesel was referred to us by our new favorite dealer, Robert Crist & Company RV in Mesa, who is completing some coach warranty work. (still waiting on parts from Monaco) So far, we are extremely happy with Robert Crist & Co. RV and recommend Williams Detroit Diesel also.