I have one i need to buy belts for this spring. It is a 50". It is only going to mow 5 or 6 yards a week. I am trying to decide on wheel belts, whether to use one on each side?? Or two ?? Whether to buy gravely belts?? Or aftermarket?? Then the big deck belt, gravely?? Or aftermarket?? So what would you do?? If you say aftermarket, info like part numbers would be helpful.. And what do you think of this mower?? Thanks guys!!