You may want to re think brushing the rollers with olive oil. 1. Shouldn't you use mineral oil instead? 2. Wouldn't keeping the rollers dry, be better than coating them with a sticky substance? I mean, most pizza places use flour, not oil. Perhaps you can add a tray in the back so you can throw some flour onto it and then throw your dough into the rollers. That would accomplish two things: Easier for you to operate and a place to toss some flour on to.
Also, how wide is your machine and is it adjustable?
But dude, hell of a job, really. Looks real good.