Borderless (Fill-Bleed) Printing Problem

[KitchM]

I am not able to get a print-out without blank borders.

I have the Canon G7020 printer on Debian 11 and have contacted the folks at Canon. Tech said the settings for "amount of extension" should be set to "Large", whatever that means. The borders decreased.

Then I checked the printer dialog box in my program and the border could not be any less than 0.139 on top and left, even with the page set to borderless 8.5x11.

Any ideas where the problem lies?