Real question, does max ammo refill the mag?

Yes.

yo man how do you get mule kick

You jump for it using a light weapon or the Sliquifier to run faster.

Here's the EE Tutorial I use https://www.ugx-mods.com/forum/scripts/55/scriptsound-how-to-add-ee-music-in-your-map/3943

I have a lot of other weapons, however the idea and era of the map. I wanted it to be only WW2 and older weapons. In my following maps I'll only have 2 to 3 WaW Weapons in the weapon's list. I appreciate the offer though.