When using print or print preview FF4 will not use the chosen printer settings it will only print landscape to center tray (this has never been a printer preference used on this computer or printer). All my other programs print correctly.

Are you setting preferences for that printer from within Firefox, using the Properties button in the native print dialog box?
That is what you see when you do {Ctrl + P} in Firefox.

Firefox saves many printer preferences separate from the system wide default printer settings, most prefs have to set thru Firefox.

I am using preferences through FF4, I double check them every time I try to print. They are set to - portrait, offset tray - still prints out landscape, center tray.