Help… was cutting some velvet for a jewelry box.  Has worked perfectly up until today.  Today I tried cutting a 212mm x 162mm rectangle and when I cut it gave a reduced size by about 2% in both directions… so it cut a rectangle about 207x158mm.  I thought something may be goofy with Lightburn so I tried the same cut on XCS.  In both instances I used the rectangle tool within the software and drew out 212mm by 162mm… and in both instances it made an identical incorrect rectangle!  In both cases.   I tightened the belts to see if that helped (it did not) but since the issue seems to be proportionally both directions I'm assuming that isn't the problem. 

Any ideas?

Tom