Yes, apart from some history of people using 0.4 successfully on other similar builds I’ve observed, you had some tell-tale signs in the log. Like instability as soon as you start to descend and the rule-of-thumb for setting and testing MOT_THST_EXPO is
- set too high you can see instability at low throttle
- set too low you can see instability at high throttle
Also if you really want to check that expo, and it would be a valuable exercise for all of us - try this thrust expo script:
https://discuss.ardupilot.org/t/automatic-mot-thst-expo-estimation-lua-script
I was just being a bit too picky with suggesting INS_HNTCH_FREQ,33
wasnt I?