If your unit isn't out of warranty the factory will work on it. DRV doesn't do work on "out of warranty" units any more. By that I believe anything older than 2 years from manufacture date.
Replacing the clips is fairly easy, the tires have to come off and then one by one you remove and replace those old clips.
I would think "any" RV dealer's service department could help you out with that. One problem I can see with that is "everybody" is booked out many months with service requests!
Good luck changing out your clips!