I went asking around here and finally caught the guy in the Mathews shop to ask. He said all Mathews bows end up right at 13/16" away from the riser, so I pulled out the calipers and set it. I also got a string loop installed while I was there. It might be a couple weeks before I get a chance to paper tune, but at least I have it set good enough that I can sling a few arrows downrange if I get a chance between now and paper tuning time.