New install of prod version, then update under help/beta. At approx 600 samples, more data needed went away. Ran it up to 700 samples, clicked done, and new offsets are -125 -34 44.
Board is ardu 2.5"
"Another with the same issue. Tried firmware erase and reload, as well as the beta copy for mission planner that is available with in the app itself. +3000 data points for me with no luck.
To get flying, Uninstalled mission planner and loaded the APM…"