I started up the engine on my just finished quarter scale Waco today for the initial check before flying it for the first time. The plane range checked just fine with the engine off, but when we started the range check with the engine running, all the servos started to jump when the receiver was in front of the plane at 10-15'. The G62 has RCIGN's ignition conversion which never gave an oz of problem on the plane it came off of. I found by touching the rigging wires for the top center wing, the interference stopped, and would restart as soon as I let go. Any suggestions as where to start with trying to solve this issue would be greatly appreciated.

Notes:
The rigging wires do cross and touch in the fuselage.
Hitec 5645 with Futaba S3004 on the throttle
Futaba PPM receiver
Ignition battery 8-10" from receiver