Last year it was time for new air bags on our coach. There is not a coach company close to our home. I did some searching for a well respected heavy truck repair shop. I was led to a local heavy truck and equipment shop. The owner was not only interested in my money but also how the bus works. I ordered the bags and valves from Prevost. When I got all the parts from Prevost we set up a time for the work. I instructed the shop owner how the level low operates. They did a great job. The shop would not replace the bags with only one nut on the top studs as Prevost did on our vintage bus.
Great service but I think the best part was a total labor charge under $600. See if you can find a respected shop then shearch POG for all the information about how to change the bags. I shared the POG information with the shop. Very well pleased and over 10,000 miles since the change with no problems.