I use a old futaba conquest. I had the same problems till recently. I had the cable hooked directly into the computers USB port and constantly had jittering. Well, for christmas I was given a digi cam and had no usb slots left to hook into for the dock. I went to walmart and bought a 4 port USB hub so I had some more slots. I hooked up the cam, working good and I hooked the control back up, to my surprise, NO JITTERS! I dont know why, but this hub has completely stopped the jittering. I was in disbelief, I hooked it back to the usb port on the comp and it jitters like crazy, but through the hub, none!! I wish someone could explain this to me.