Printing discs on the Canon 9000 Mark II

I have a Canon 9000 Mark II and I am printing directly to disc using the tray with my printer. Full bleed labels are printing with just a sliver of white showing around one side of the disc. Is there a pattern I can print to align the disc to printer so that it is dead center? The image isn’t off much–just enough to nettle me. I am currently using Sure Thing Disc Labeler.

Thanks in advance.

Guess I will figure it out myself.