How do I get Remote Desktop app to use the correct font/spacing?

I have a VFP program which uses Letter Gothic Line font (a fixed width font)
It runs happily on machine A (W7) and uses the correct font.
It runs happily on machine B (W7) and uses the correct font. (Logged on as Fred say)

When on machine A I launch a remote desktop on Machine B, log on as Fred and start the program from the same shortcut that I use when sitting at machine B, the program uses a different font. I cant work out exactly which font it is using (its certainly the correct family - fixed width etc) and the characters look the same but it is a wider spacing of the letters (as a result, the program's window does not quite fit in the RD) and some of line characters are slightly different but this may just be a spacing issue.

It seems it is due to the RDP inability to resize the contents of the desktop to fit the size of the RDP screen - but why?
If edit the .rdp file to include smartsizing:i:1 it fails to size at all let alone smartly!
If I set the size of hte rdp window to be big enough, the apoplicaiton looks and works just fine

Any suggestion on why Windows does not resize the application to fit the window or change the rdp window size to accommodate the application?