These guys know thier RV's! I had a vibration issue with a 2006 coach and have had it to six previous shops for diagnosis. I drove two hours to the shop. They were very busy and said it would take a week to get to my rig. The next day, they called and had the problem resolved. This is the PLACE to go for suspension and driveline issues. Thanks Jay for your help and great customer service. Others could take lessons from you.