If you do decide to replace the decals and aren't able to find OEM, my shop has used a place called KEG Graphics in California to make them for us and they've done some pretty amazing work at more than reasonable prices. Last summer we needed a huge rear wall decal for a Damon Intruder that couldn't be purchased any longer. We had them make it for us, they asked exhaustive questions until they had the colors/measurements down exact, and the result was beyond expectations. It looked exactly like the OEM decal. We've used them many times, highly recommend them.
KEG Graphics / RV Graphics
7309 Murdy Circle
Huntington Beach, CA 92647
(714) 841-1131
sales@rvgraphics.us
http://rvgraphics.us/, www.keggraphics.com
The first website is a page you can look to see if they have the graphics you are looking for; if they don't there's a contact page. The second website is general information.