Labels template printing white outline - can it be avoided?

Hi guys,

I'm trying to use Avery L7160 template.

Created label prints fine over full page (3x7 labels), but CorelDRAW prints with white outline (grid) between labels. Labels have edge to edge dark blue areas, and because printer's paper handling is not perfect, these white outlines show on labels, instead of sitting between labels. Especially horizontal lines, since labels sheet hasn't got margin between rows of labels.

I have tried extending colored areas, hoping they will overprint... but grid is still showing.

I have attached screenshot from print preview screen.

Can this grid be disabled?

Thanks in advance,

Nick