We are new to the vinyl cutting business but have been doing fairly well since we have started out, but now our cutter is giving us problems. When we make cuts it leaves one to two mm gaps in the cuts. Weeding is a nightmare. We have done numerous test's with the same problem ( a gap at the bottom of the circle and square. We have adjusted offset, force, speed, and cleaned multiple times but still no results. I don't even know if roland would do anything about it because we bought it from a private owner.