Is anyone using the KX3 / KXPA100 / PX3 with a Heil Pro7 ? I'm curious if I need to buy adapters or anything (other than a foot switch) as I know the PTT will be disabled or the plug shorts out the TRRS Mic socket in the KX3. I assume there is a way to hook the footswitch to the system (via KXPA100?) thanks, Kevin (KK4YEL)