Ive only been able to get size B to print correctly on our plotter. Ive tried all the setting and combinations of settings that I can think of. I will try to export to dfx. Thank you.

I can't imagine it's not able to print accurate 1:1's. I suspect wrong settings, maybe printer settings, like fit to page, within border of printable area or something like that. Set to 100% or accordingly.
Can eDrawings export to dxf? Then could be worth a try and then open and print in LibreCAD.