Problems with Firing from different weapons

Previously, I've had some trouble with having a character with more than 1 mount for weapons, but the weapons will only fire from mount0.

The setup is, the character has mount0 in his chest and mount1 in the hand. This is to cheat a melee attack by having an invisible gun firing an invisible bullet from mount0. And when I switch weapons to a gun in the hand at mount1, it wouldn't fire. I worked around this by having 2 separate dts files, one for the melee weapon and one for the ranged weapon.

So now, I am making a boss character in another game that will need 3 mount points, one in the chest for cheating melee attacks, one in the hand, and one in the mouth for a spitting fireball attack. I am setting up the AI to shoot from certain weapons at certain times when the proper function is called, but I am worried that my previous problem will occur with weapons firing from mount0.

Is there something I am missing? Or is there a work around?

Thanks.