Anyone ever use this model? I have lawnboys but they are all commercial. I saw the 4.5 hp silver series, at a yard sale yesterday, it was 2years old. The guy said give him $50 bucks and i could put it on my truck. I would have taken it right there, but i couldn't get it started. the guy told me he hired a lawnguy and the mower hasn't been started in a year...... needs a tune up maybe. Quality or don't bother?