Crashergs,
I have never understood this.............. Inside every servo is a pot that has very thin arms that contact the pot surface. Seems to me that the vibration you get from a gasser would shake these arms and cause a jittery servo and maybe even interference with the rest of your radio system. My Great Planes Pitts shows this in the manual for it and I can't believe they would approve of this method. They void your warranty if you are a tad over their reccomended engine size but they show an arrangement like this! Use the red Nyrod and move the throttle servo to the trailing edge of the wing inside the fuse. Keep your battery and switch harness back away from the motor also. The magneto gives off a lot of RF noise, so the further you keep radio electronics back from the motor, the better. Also make sure your plug has an "R" somewhere in the part number. No "R", no resistor. No resistor, lots of RF noise to drive your radio crazy. If you want to hear some noise, tune your car's radio to an AM station with a lot of static and listen to your car's ignition in the speakers of the radio. Rev the motor and you'll hear the RF. On engines that have battery ignitions, keep the battery for the ignition, the kill switch and the ignition for the motor up front and away from the rest of the radio gear. Hope this helps. I learned this years ago on my own without something like RCU to help out. Now you can get a answer to problems in minutes! Happy flying!
Terry