RE: RF Interference
the ferrite beads should not be magnetized.they just reduce any rf generated by long servo leads most computer monitors and laptop power supples have the ferrite beads on them to reduce rf noise.again they just reduce it not eliminate it.if you have standard length leads you should not have a need for the beads if your intallation is properlly set up.how close to the rx is your tx when things jitter ?sometimes if you are too close you can swamp the rx.is the g2o an ignition engine?if so then there is a whole lot of things that need to be done to eliminate rf noise.