Please refer to this forum to a thread started by Valhala re Gas Saito page 14 about half way thru where a fellow experienced servo jitters even though using 2.4 ghz. He had just got the engine back from Hoizon ,I believe, with a new ignition system installed. We have all witnessed a fellow preflighting his plane at the airfield, come up with a jittery servo(s), and spend the rest of the afternoon unsucessfully trying to find the source.(Gremlins???) It is now obvious to me that CF does not make a "Faraday Cage". But it does have inherent RF absorbtion qualities. Skin effect ? Why not use it and leave the rest of your investment to operate in it's shadow?