The 20mm cannon was designed to be feed from the ammo box but the ammo box would not fit in the wing. When they were feed witout the ammo case the gun jammed?

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A good plan violently executed today is better than a perfect plan executed tomorrow.
Patton

The direct use of force is such a poor solution to any problem, it is generally employed only by small children and large nations.
David Friedman

Military justice is to justice what military music is to music.
Groucho Marx