I think HT is right, JB.
The one incredible thing I've noticed is everytime I got a gun damage, I'd look at my wing and see the hole lying smack right over the top where that exact gun would be placed inside.
Like, of the eight guns in the P-47, I get a gun damage, look at the wings and see the hole in the place where the #3 machine gun would be - and if I test fire I really see the #3 gun not working!
..
ps) HT, can't we get the damage effects working under the wings and at the fuselage too?? It'd be so cool!!!!