The first thing I would do is install a digital readout. I think Proscales are about the best, if you want something cheaper, buy a Wixey DRO. Keep a set of calipers on top of the sander, measure your piece with that, and dial in the sander to match. It saves alot of time and you have the repeatability that would be hard to match with the stock pointer and scale.
Enjoy your new tool.