OK.

I tried switching the servo plugs to see if it is the throttle stick on the controller. Nope. Still the same, just on the other stick.

I tried reheating all the solder connections on the board. No change. Before I reheated them all I looked them over with a 10 x loup and my OptiVisor, andI must say thatPhil does nice soldering. Clean, without too much solder.

I'm going to unplug the battery for the night and try it in the morning. It has fixed itself for the last two mornings, then the Gremlins wake up.