you may need to add a capacitor to your receiver. because you are using a high powered servo you might be getting brown outs. the capacitor will store a small amount of power that will keep the receiver from browning out. I run ebuggy and use that same radio, I have turned off the telemetry, I dont see the point. Hopefully this solves your problem.

http://www.amainhobbies.com/product_...tage-Protector