A one time setup for calibrating the electronic heading sensor, chart display heading, and radar overlay alignment is kind of archaic with today's possibilities. It seems like it would be possible to add the capability to use the GPS information to fine tune this automatically. It would be really nice to see the TZT2 software correct all of the heading and alignment items by sampling and learning over time so they can be spot on and not just a manually input one time setup which is difficult to get 100% in alignment in all directions of travel.