I never liked that balancer plug as power lead. That's fine as long as you have you have an open-wire-station, but as soon as you start integrating everything neatly it becomes apparent that 1 3S pack is not enough and then you're stuck.
HK sells the female and male balancer leads, or you just snip off one from an old battery, or you unsolder that plug and replace it. Either way, I made my own custom cable.
For the tracker I'm not sure what you mean. did you finish your tracker project already?!
I got my new RVGS delivered by the postman, and also buildt me an small and simple box to mount the tracker on top, and the 1G3 vRx, 5G8 repeater, powerbox and battery inside. Waiting for an cpatch12 antenna, as my big helical was to heavy for the tilt servo.
When setting heading offset, how important is it to place the airplane directly in front of the tracker? Should be okay just to stay in between the front 180' field?