I too am interested.
Originally posted by K10Perry If all that's needed for contacts is a hole and flat spots, they can easily be built in.
I don't even think this is entirely necessary. The tubes can be used like a K mount adapter on the Q. All you have to do is make sure the shutter on the lens is open. It is closed by default when the camera isn't on, but if you take the lens off of the camera when it is on, the shutter will stay opened. Of course this will only allow you to use the lens on the tubes with a completely opened aperture.
My whole point in saying this is that if you cannot make a connection between the camera and the lens through the extension tube, not to give up because there is a less than ideal that is still viable.