From your public profile, I see you live in CA so a trip to SC may not be realistic. However, if you ever travel or plan to travel near Gaffney, SC, the Freightliner Custom Chassis Service Center is there and they specialize in servicing the FL motorhome chassis. If that is not realistic, I agree with the others....try and find a service center that will take care of your chassis. Some Freightliner Oasis centers are good, some I hear are not.
Another option is to locate a Cummins Coach Care Center in your area. They have additional training/certifications to service not only the chassis, but much of the coach systems as well. There are four Coach Care centers listed in California.