Looking for advice on a 1990 Mallard Sprinter-Class A... I have a chance to buy it. 27,000 miles in good shape (275SB XL Package?- $12,300). The problem, I don't know anything about MH's or this model. My wife and I want to start slow and enjoy it, before moving up to a newer and bigger RV. Need help (what to ask/look for) before I buy.