Originally Posted by Matt Halton
Thanks Del and Fred for your inputs, appreciated. I calibrated them again (all three ESC's together) with the two button method from the board. Swapped over M1 and M2, but bizzarely the same motor (M1) is still not revving up or down when moving the frame in the rolling axis.
Plug M1 into the throttle channel of your Rx and test it outside of a FC?