I'm looking for a used fridge. The one I'm considering currently is a Norcold MRFT 340D-F. I'll call the factory tomorrow to determine its age, but it is probably 8 - 10 years old. Is there some point after which these things break down? Are parts hard to come by for a 10 year old unit? It looks in good condition, but it may have run quite a bit in an RV, who knows. This one also comes with the slide from the RV.