Oh, that’s right!
For that log, there were no sat locks - in a garage just to get RCIN/ RCOU data.
Not an actual flight.
Wiping and reloading.
Loaded 3.4.2 octo then back down to 3.4.2 hex and reset default.
I’ll let you know…
Do yourself a favor.
Flash Plane. Reset PixHawk
Flash Hexa and configure
I agree, flashing plane then hex will get rid of any old params.
It cleared the params.
I even had to re-calibrate the ESCs
The ESC calibration has nothing to do with the rest of the system.
but it doesn’t do any harm on doing it again 
Usually when I give a good clean out The ESCs will beep at me needing re-calibration. 
I believe finally getting my fleet to 3.4.2 firmware got it.
Thanks all
Better go to 3.4.3
Saw it, got it on my 550 because 3.4.2 kept hitting Accel not healthy.
Well, it was healthy on 3.3.3 