Rhino with DrawingBoard VI or TabletWorks Software?

Curious if anyone has the two working together? Lucky me I asked for a demo before spending 3 grand on this digitizing tablet because it doesn’t seem to work in Rhino. All my circles come out as ovals, tech support on the tablet side is blaming Rhino and Rhino hasn’t even heard of their company. Totally taking Rhino’s side on this but I thought I’d ask here for advice before I chunk it in the garbage (aka mail it back).

This is the tablet if you’re wondering, I’m tracing several hundred large, organic shapes otherwise I wouldn’t bother with one.