Paper size mismatch

[SergioTRG]

Printer prints wrong size. We are an architectural business and typically use A0, A1, A2 sizes. We set the desired printout size and the printer prints the wrong size.  

[rustydiver]

I print a lot of A0 and custom paper sizes through Adobe, make sure you have chosen the correct paper size in the page set up menu and you have the print actual size box ticked or scaled to the % you need.

Make sure the choose paper source by PDF is not ticked, I found out not long ago by mistake it messed my run of A0 prints up.

I hope this helps, bur expect someone will be along to give you a definitive answer.