I have Fuji 50EI in new 260 Extra. Problem is range checking with antenna collapsed or with plane at far end of field. Jitters. All servos. Had base type antenna, changed to full length, no change. Seperated all leads. No change. Have a new receiver coming, will change it and xstal. Have been told that a damaged xtal can be the culprit. Also, may need a choke in the throttle leads back to the rcvr.
Talked to tech support at Hobbico, said I was doing everything right to locate the problem and if it persists to send the engine to them.
It was also suggested to me to isolate the EI module with aluminum foil grounded to the engine to test the the shield in the module was adequate.
Any others?