so if you can figure it out from those sparse instructions you will be doing well
but it should get you going in a direction, and if you get stuck, just holler and i will talk you through the details at each pinch point.
like how tall to make the pipe bushing etc, as that effects how much sleeve is exposed above the table.
alternatively- send me the sander, i will do the conversion for you, but you would just need to pay for the collar being turned- i think it cost me $70 canadian, which is about $12.39 USD right now
and the return shipping.
but for the most part, i think you could easily do the conversion, i must have taken mine apart and back together 5 or six times getting it all just right, but i am a tad OCD about stuff- like most of us are
just holler dont be shy- and i can send you a phone no. if you want to talk over the phone and make it easier
good luck