I am stumped. At some point I ceased being able to fire anything other than the position I am at when using the defensive guns on a bomber. I have Fire Primary set to "f", Fire Secondary set to "b" and Fire All set to "v", but only the Fire Primary seems to do anything. When I press the keys on my keyboard instead of using the joystick, "f" fires the gun(s) at my current position on only the bomber I am on and "b" and "v" do nothing.
What am I overlooking?