Has anyone installed a different intercom besides the Flightcom 403? I have found that certain headsets don't work very well, some you can hear the passenger but they can't hear you very well, or when using two Lightspeed HS there is a pretty loud hissing noise when talking, I've replaced the 403 with another 403 (stereo) and no change, some headsets work better than others but nothing really great, just wondering if other people have issues with this intercom.
