I am up against troubles with Octa (octo) quad.
Motors 1-8 are triple checked, rotation direction & props according to this:
tested & retested my radio - roll, pitch, yaw, throttle all proper directions.
Running APM 2.5 (onboard mag)
V.3.01 Octa Quad
Mission planner 1.2.85
Behavior is very unusual - copter is both over-reacting to minor inputs, and seems to be responding to stick input in cockeyed ways - using mixtures of motors that move it sometimes opposite of what should be happening.
Despite my searches, definitive help eludes me.
This is my first Octa Quad, but have successfully built & flown flat Octa, and quads.
Any help would be marvelous.