The Winnebago parts books may help you with the assembly of the unit. Pick which serial number group you have.
Navion (500)
Also while I'm on the website and since you gave the exact model........... here are the wiring drawings.
And the plumbing drawings.
I will suggest you down load all of the applicable PDF files to a thumb drive and keep the drive in the binder with the manuals in the black pouch, when you are on the road they could come in handy.
I'm going to go out on a limb here, and suggest that recovering wallpaper or painting it is great, IF you intend to keep the RV for a long time. Many buyers, and I'm one of those, will walk away from one that has been renovated in such a manner (I'm an originalist) as I prefer it the way it was built.... generally. I do make certain mechanical and functional improvements (I owned a 2007 View) but shy away from cosmetic changes unless the condition dictates otherwise. I look at everything from a resale viewpoint.
My current Bigfoot trailer was something that I almost walked away from. The previous owners had made changes largely to do Youtube videos and win awards at fiberglass trailer rallys, and some of the stuff was botched up (in my opinion). Luckily not much, and there are things which I will eventually restore back to original, ie, they put glass in SOME of the overhead cabinet doors, but failed to use tempered glass. I have to be very careful to make sure that nothing in the cabinets can break the glass. They gave me the original wood inserts for the doors, but disassembling the doors a second time is virtually impossible with the glue and brads they used on them.
I'm going to suggest you join the Winnebago View/Navion groups on io.groups. This is done in the old groups format and was rolled over from Yahoo Groups when they ended their groups support.
Main Discussion group for View and Navion
Modifications and improvements discussion group for the View and Navion
Technical discussions for the View and Navion
You have to sign up for each of the three groups separately, and moderators will approve you. Select to NOT receive email subscriptions, it will drive you nutty, as you will be inundated with emails for every discussion. This is the original View and Navion group, started in 2006, with a few of the original members still participating. There are photo albums, and some databases that are helpful also.
There is a View and Navion group on Facebook but I do not do FB and do not know anything about it.
Charles