Low in antiaircraft ammunition

[Rotax]

Hello, SH5 now doing very well with these mods:

01 24Unterseeboot Mod.V.1.2
02 24Unterseeboot Mejoras juego FX 1.1
03 24Unterseeboot Mejoras de sonido 1.0
04 Church's SHV 1.01 Keyboard Commands v1.1
05 OPEN HORIZONS II_full v1.9
06 OHIIv1.9_Patch1
07 OHII Minefield map for TDWs Ui
08 Free Upgrades
09 FREE UPGRADES Patch1
10 OHII_TDW_MInes_Subnets_Detectable_in_Hydro (OH II v1.8)
11 Uboat_Snorkel_1_1_0_ by_TheDarkWraith
12 One Ship One Torpedo v1.00
13 Trevally Automated Scripts v0.6
14 Trevally Harbour & Kiel Canal Pilot v2.9

Thank you very much to all moders

But I find that I have installed on my sub, 2 double barrel anti-aircraft and I've only had ammunition to shoot down two aircraft. After a while have been other aircraft patrols and when I give the order to fire, do nothing antiaircraft shooters, go straight to the antiaircraft and horrified I see no ammunition, is at zero, having to dive quickly.

Is it possible that the ammo is so scarce in the anti-aircraft, or something does not do well???
greetings friends