It's not the backup I am concerned about.....it is RF interference coming down the long lines in the UltraBandit.....even if a lead to the smoke pump or NG happens to be shorter, it runs close to longer lines, and may pick up some stray RF......there has been much discussion about the servo motors themselves generating a back EMF of suffiencient strength to cause glitches in the RX.......so it is best to protect all the lines coming into the RX.....