So on one of my test flights the FMC was much larger than normal, could I have hit a button that does something? I checked the graphics settings and they were all still the same, only the FMC had changed size... is this just a glitcht? Patrick Boynton

Possible you accidentally clicked/dragged and made it bigger with your mouse?

Hang on I'm guessing you were in 2D? Yes it's possible to resize them in 2D, but not in 3D unless you had the CDU pulled up in a 2D window.