Print QSL's with a HP Laserjet P1005 printer

[F6DKQ]

Hi,
Sorry to ask, maybe this question has already been answered, but I recently parted from my old Canon I950
which printed perfectly the qsl models in the gallery, in A4 mode.
I used to put the 4X6 sheets on the right side, pushed the slider left to right to fit the dimension.

Now, it does not work any longer with my HP Laserjet P1005. I can't do the same way, because both sliders
move together which brings the sheets exactly in the middle and obviouly, the label is not centered when I print.
the text overlaps the left margin.
 Any advice ? maybe there's something which works in the provided models.....I did not try them all.....

Thank you for your help.