I've created a Mounting Hole in Expedition VX2.4 that appears to have a clearance of 25 mils set up somewhere. Because when I move a via close to the mounting hole the closest I can get to the mounting hole (non-plated) from the via pad to the drill hole is 25 mils. I assume there is some place that I can set the mounting hole clearance, but I can't find it. I would like to change the clearance to a smaller value. Is there a way to change this clearance value?