Nicely done. Strange that EK2 didn’t work, it should.
I just want to be clear to others reading this thread that I recommend EKx_ALT_SOURCE be left at the default of 0 (for barometer). It should not be set to “1” for Rangefinder.
In @ppoirier’s test environment which is indoors with a flat floor it’s perhaps OK but in 99% of situations I do not recommend setting the altitude source to range finder. I dealt with yet another user support issue yesterday caused by a user setting this parameter to range finder. I feel like I’m constantly fighting a battle to stop people from changing this parameter because it rarely goes well.