Page Setups - Orientation and Plot Margins

I am running V12.1.7 and attempting to setup a template for Bricacad that mimics the Autocad setup that the office has been using for the last 15 + years.  I am going through the page setups and have noticed that the x and y offsets defined in the plot offset area get changed around, everything is the same other wise.

The other thing that I have noted is that the scale seems to be out, if I select "Fit print area to size of page" unexpected scaling is noted.  In Autocad 2009 I see 1 to 2.183 and Bricscad I see 1 = 2.17366.  I am printing to a .PC3 printer, has anybody else noticed this or have I done something wonky with my setup?