Inefficient ammo resupplying?:(

[Socks]

I suppose this would apply to all MoW games, but i'm currently playing the AS demo. The problem is, when i try to resupply i can only seem to move 1 at a time (VERY slow), or all at once.

So how do i split a stack of ammo, or fast transfer...or anything other than drag>drop? Like there's 75 shells in a supply truck, i don't want to drag 25 to one AT gun, 25 to another, then just finally right click the last 25 to supply the last.

How does one micromanage ammo (see above example!)?
Is there a mod out there that fixes this problem?
If not, is there a way to "easily" alter the game files to fix it yourself?

I do like the demo, i'm getting my ass kicked and it's fun! But i love trying to keep my soldiers alive (i refuse to sacrifice them, i'd rather resupply them).