I just set up a Titan 2, and cannot get the vinyl to feed off the roll. I double checked the pinch points on the rollers, and without vinyl in the machine I can see that the grit rollers are all moving. When I try to jog the vinyl to check tracking, the roll doesn't move at all, but I can hear the grit rollers sliding against the back of the vinyl. I'm using a 24"x50 yard roll of Oracal 631. I need to hopefully start cutting today, and am stuck until I figure this out. Any tips would be appreciated!