PIXMA PRO-100S not printing to specified margins in Lightroom

[hera62]

Hello everyone, 
anyone holding canon pixma pro 100-s and printing using Lightroom classic, photoshop or software of canon ,

well, I want to print A3+ (33x48cm) with 2 cm margins (each side)

Despite properly imposing the margins (2x2= 4) it will be ( 29x44 cm ) in preview I see the measurements correctly but in print the margins are different do you have any solution? 

[jrhoffman75]

What media type? Is it Fine Art paper?

[hera62]

No it’s generic glossy Photo paper 

[hera62]

yes I  cut exactly 33 cm x 48 cm paper 

Example of dimension A4 ( 21x29.7 cm )  2cm margin I get  1,8 cm right , 1,8 left 1,8 bottom and 1,5 on top  

example of a3+    I get 2cm right , 2.2 cm left , 2cm top and 1,2 cm bottom (there is always one side with slim margin top or bottom )

[jrhoffman75]

Maybe try creating a custom paper size in the printer driver with those dimensions.