To get focus on infinity with the long lens and the near - far adjuster about 1/4 in from far, I have the adapter in the camera board as far out as it will go (only 1 1/2 turns from falling out) and still I have to have the lens.only about 1 turn from falling out of the adapter. I can screw both in a bit more if I move the near - far adjuster towards near, but I would expect the lens' optics to be set up for infinity to be not far from the far limit.
Is this the way it is? If so I would rather have an adapter for the camera board that has a bit more depth to it, so things are more secure.
btw, I get .revision from picamera as 'testc'. Is this a temporary aberration?