Power Fist bugs/problems

[SharpC.O.14]

Hello. I have been playing tekkit on my Mac for some time now and I have come to the point where I have made the power fist and armour from the MPS mod. I have added the plasma gun, rail gun, ore scanner, Field Tinker, pick shovel and axe, melee attack. Some of these I have taken off for trying to see if this problem I have will fix itself. I t hasn't.

 

My problem is with the power fist is when I want to change to the different modules I have added (SHIFT + MOUSE WHEEL/SCROLL) all that happens is that I scroll through the items in my hotbar and not change module like it should.

 

Any advice and solutions are great to have

 

 

 

 

P.S. I have also added MV battery add-ons to all my pieces.