I've noticed whenever one of the guns is damaged on the plane, the damaged gun is always on opposite wing in which has the bullethole. For example, bullet hits left wing and takes out middle gun; That gun shoots but the middle one, on the right wing, does not shoot.
Aside from the gun damage glitch, I was talking to couple of guys in the game about pony guns. I told them, for some reason, the guns on those just aren't as effective as the ones on F6Fs, F4Us, FM2, etc, etc but one of guys thought up an had good possilibility that I thought I would mention; Is it possible there is gun glitch on 51D that might have been accidently overlooked?