I use to tell my computer clients that their dreams of a restoration of their asset would only accomplish this: It would be no better than just before it failed. If you liked it then, you'll like it when we return it. But it'll be no better than that. Base your judgement of the work on that.
I'd say we got the job 50% of the time. And they knew what they were getting back. Being honest like that made it easy to sell up. And no hassles with the repairs if they went that route, of course the repairs where almost always less expensive than new.
I'd tell this OP the same thing. And if he can find a quality repair for a sum he's willing to pay, go for it. But only if he liked the RV before he discovered the problem.
Yes Dale, that was the repair I was talking about...thanks for the link.