Hirobo Shuttle Plus,
OS32,
CSM180 gyro,
Sanwa RD6000 Tx,
Sanwa RX611 Rx,
Supertec S09 rudder servo,
Hitec 605BB on collective,
Sanwa 102 on aileron, elevator, and throttle,
1700mAh (4 'c' cell) nicad Rx battery pack

The glitches don't appear to go away with time.

Last Weds we changed the crystals and thought that solved it, but then it occured yesterday.

The glitches don't occur when the engine isn't running, but when the engine was running and the heli was sat on the ground it "hopped" on the spot as the throttle/collective twitched.

This occured when mine was the only radio active on our field, and on separate days, so I don't believe this is radio interference.

If I've missed anything that might help, just ask.

Thanks,
Rob.