Draftsight 2017 printing to wrong scale

Hi, I'm using draftsight 2017 and have always printed to my Brother inkjet successfully straight from model space.

I set up the print run to print on to A3 and select my drawing parameters and choose fit paper size (it's not critical for this particular drawing as it's a sheet I print to make field notes on ).

Everything about my set up points to it filling a complete A3 sheet but when it prints it comes out as a miniature in one corner of the paper. I calculate it is about 1/16 the right size and am completely baffled.

The same thing happens if I try it on A4 paper - again about 1/16 miniature in the corner.

I've used draftsight for many years and never come across this.

Is there some basic scaling I need to do before setting up printing?

it's driving me nuts.

 

Mike