Avion truck campers - Hundreds of photos

We call the "bedover" the cabover, if you mean the section that protrudes in the front over the truck? If you are removing rotten wood along the "Perimeter" then it has been compromised by leaks along the edges, window, and drains. It may well have been repaired in the past. The cabover floors were constructed, to my knowledge, in one piece. But, Ticki probably knows for sure. Have you thought about talking to Chuck Cayo?

I'm still wondering why you don't remove the bustle. Could you explain the issue, again, and perhaps send along photos? It might help us in giving some advice.