Meine Ränder sollen 2,5cm mit Ausnahme von links(3cm) sein. Sind sie aber nicht.

Folgender Code
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top = 2,8
bottom = 3
left = 3,2
right = 2,8
Ich nutze Okular als PDF-Reader der das ganze über einen Canon MP 250 druckt. Das es ein günstiger Einzugsdrucker ist, kann diese starken Abweichungen nicht erklären.
Der Druckertreiber bieten drei Optionen (expand, crop, shrink) bezüglich der Seitenränder bzw. Seitenausdehnung an. Ich habe alle drei probiert, wobei "shrink" (ist eh default) noch die nahliegensten Ergebnisse liefert.
Warum ist das so und wie kann ich es beeinflussen?
Das hier sind die vermutlich relevanten Teile des log-files
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