Using a G5 as backup to G3x touch in rv8. In phase 1, have gotten different feedback on this. Garmin told me I do have to calibrate pitch/roll on G5 along with g3x (g5 showing about 5 degrees more down then g3x). But since G5 is in line with g3x thought g5 was calibrated when I did the g3x….anybody else use G5 as backup to G3X , and what did you do?