Bought low mileage V-10 1998 Four Winds 22rk last September with 36K miles on it. It was very clean, the outside fiber glass shined, new oil, and everything in the house worked. Took it on a 250 mile trip right away. The only thing I could find that bothered me is the steering feels very lite, as if there is not weight on the front wheels.
Have and appointment next month to have the V-10 flushed, water hoses replaced, serpentine belt replaced, new thermostat, fuel filter, and shocks replaced. I bought new Bilstine heavy duty shocks on line. If the steering is still lite I'll have the caster set to the +5 range. If that does not work I'll install a steering stabilizer. The steering bothers me the most because of the 18 wheelers sucking on me as they past.
I know that the V10's of this age spit spark plugs. In the mountains of Yellowstone and Grand Tetons, the V-10 did not even notice them. So the engine is strong. My wife and I looked at it this way: For the price we paid, 14K, if the V-10 needs replacement, we are still way ahead of the 50k to 75K for a new motor home.