Doug, VERY light passes (especially as you get to finer grits) is the rule. I don't go finer than 120 as I seem to always get burning at finer grits. Feed rate is less critical than light passes and I usually run mine about 2/3 of max speed. I hope your feed belt tracks better than mine. I have fought it ever since I bought it new. And Jet's tech support was no help.
Very light passes= about 1/8 turn of the crank
Very light passes= about 1/8 turn of the crank