New owner here. I bought a 1997 Marathon (Coach 450) last month. New tires installed the day before delivery (by others). First cross-country trip to Indiana from Arizona this weekend resulted in losing (2) covers:

The "Peanut" style Tag Axle Hub/Lug Nut Cover
The 1/2" tall by 6" wide "cap" for the Drive Axle Dually (the rest of the "top hat" and "peanut" cover is in tact)

I had no idea how these were secured or that they could potentially fall off on the first trip. As soon as I discovered them I walked around the coach and discovered the (2) front steer wheels were missing several of their screws (one held only by one screw). I removed those for safe keeping.

I haven't called Marathon but I did call the consignment dealer who managed the sale and had the tires installed for the previous owner by a third party.

At this point I would entertain offers from someone with one good steer or tag axle cover and the top hat only (or the entire assembly) for the dual wheel. Anyone have any surplus parts?