Describe what behavior of the drone you expect in M mode with the right stick held by friction slightly off-center. How do you envision the attitude of the aircraft relative to horizontal?
The attitude? No clue.
I've done 8 or 10 "Normal --> Manual" transitions now. In every case, when the "stick image" page comes up, it tells me to lower the left stick, and leave the right stick alone. In every case, once I do that and Manual gets engaged, the aircraft wallows around for a couple of seconds, and then starts to drift backwards and downwards.
Because this happens every time
, in exactly the same direction, it has to be the result of the control stick positions, and not some random perturbation.
I think I've been a bit sloppy in my use of the term "hover". I'm not expecting to get it to hover in the positive stability sense that most DJI drones hover. I'm expecting to be able to significantly extend the "wallow" phase, and to be able to keep it (relatively) stationary, with minimal control movements. Again, this in a no-wind condition.
Hopefully, that's a little more clear.