Radiosport hand key will key Maestro but not Amp. I have a Radiosport Heaset which when I press the transmit button on the headset will key both the maestro and my Expert Amp. When I connect the Radiosport Hand Switch, only the Maestro keys. Any ideas or setting I need to change. In the house I have DDUtil but am planning on running mobile only connecting the Maestro to a Flex 6300 I will have in the trunk with an ALS 500 Amp.