Have recently sold 5er and going to move to A or C. Looking at an 01 Tradewinds DP, 39'. I know national is out of business wonder about availability of parts, service, etc. This is our first move to a motorized coach and we are wondering about others experience with this coach, would it be advisable is I could buy it at NADA low retail. Has not been run in a couple of years, what pitfalls do I need to look out for?