Help with servo bounce.

[rmiller2010]

I have a precision aerobatics edge 540 with a 50cc DAL engine up front. Its original owner used to run dual receivers onboard. I have changed to single receiver with dual power supply and I now get a bounce in my throttle servo only when the motor is running. How do I overcome this problem without going back to dual receiver.
I have moved the receiver as far as practical away from the electronic ignition, but the problem still occurs

[bodywerks]

Check to make sure your spark plug cap is secure. Also, if it is the original plug it is probably some chinese crap that will fail if you look at it funny. Replace it with an NGK CM-6 plug.
If you are still on that ol'fashion 72mhz with an even older-fashioned crystal-based receiver, make sure the crystal is securely installed and be sure to tape it secure. If that doesn't fix it try a new crystal.

[fastace]

firstly if you are running a crystal FM receiver, toss it as crystals and vibrations dont mix very well. you can try holding the receiver in hand whilst the engine is idleing to see if theres any difference in the bounce problem also make sure there is some insulation from the carby link end to the throttle servo , especially if this servo has metal gears. if this fails you should try another servo plus make sure the prop is balanced.

[rcdart]

Replace the servo, see if it goes away.