Rebel starfighters' shields down

[Jonsson]

Hi! I'm new to this editing stuff and I'd like to know how can I edit X-wing Alliance so that rebel starfighters (A-wing, B-wing, T-wing, Y-wing, X-wing and Z-95) don't have a shield system or shields at 0%. I get very frustrated in a skirmish battle when i have to shoot at a B-wing for like a million times.
I'm trying to make it more like an authentic Star Wars battle.

What's the easiest way to do this?

Thanks for your help in advance!