I have 4 new 7955 servos. Two on each elevator. I programmed two of them successfully with the HFP 10. The problem is that when I went to set center and enpoints on the other two servos. When I plug in the progammer and select Center and Endpoint function the servos don't stop moving. They continuously move from about +25 to -25. Any suggestions.

I've not heard of that before. I would try resetting the servos first.

Mike.

have tried that several times and it has no effect. Also, the servos work normally when connected to a receiver. I have ordered aHPP-21 programmer and am going to try that next.