There are a million threads re interference in RCU, and a million different opions. Just keep to the basics. Move the Rx as far away as possible from the CDI/ Magneto. Use 2 battery packs (no Y leads to one battery) - one for the Rx and the other for the CDI if you have one. No metal to metal to the throttle. Resistor spark plugs and good grounding from the CDI to engine or magneto. Make sure the servo extension leads are firmy plugged in etc etc.
2.4 is good, but it will NOT prevent CDI / magneto interference, it will only mask it. You will still need to follow all the basic rules when using Gas.