The 4.3 board has a spot for a header.. which I've covered with probe jacks. I'm looking for some suggestions on how to best sneak these on a completed board without messing it all up or losing existing functionality. I wish I had decided I'd like the option before I soldered the probes in place, I could have put the header on and trimmed it flush. Maybe added headers to the spare jack pins.On Page 8 of this thread someone posted my diagram of how to wire the RDTC to the HM board. It shows HMv4.2 board, works the same way on HMv4.3 board though.