Weapons not firing correctly??

[Slane]

I'm playing a campaign as the US versus the Japanese during 1941 in the Philippines. I have M3 tanks, M3 75 mm tank destroyers, M4A2 light tanks and infantry. I have just started to engage some of the Japanese infantry with these units and have run into a “problem” where they will fire at them with their slot 1 weapon but will not fire any other weapons even though I’ve made sure that they’re in range.

Example: M3 tank will fire its 37mm gun and 75mm gun but will not fire it CMG or BMG. I can deactivate the 37 and 75 and one MG will fire but not the other. Same for my tank destroyers, they will fire the 75mm TD gun but not the machine gun unless I deselect the 75.

It gets annoying after awhile of selecting a unit, deactivating main guns, firing several times, reactivating weapons and doing it all again for the next tank, TD, etc.

I’ve be playing winSPMBT for awhile and units on that game will fire all weapons until it runs out of rounds for that turn. Is it just that it’s a different game or is there something I need to check in the preferences?