Had to reboot three times today to clear the faults, and it's presently doing it - the level on the camera shows a tilt of 8 degrees and won't move.
You are expecting the camera to rotate with only 8° of tilt? That seems a little low... If I want the camera to rotate, I give it a good tilt to almost 90° and it rotates every time.
Also found that the shake to switch between cameras motion is more like a twisting shake rather than just a shake for it to work.