I just purchased a QHY128C which I plan to use on my C11" EdgeHD but am waiting for a few more parts. In the meantime, I want to test it on my 80mm refractor. It comes with a tilt adapter and a nose piece and the online manual indicates the nose piece connects to the tilt adapter. However, that does not work as I noticed: 1) the nose piece is not stable and 2) the diameter of the nose piece is too small as it covers the edges of the sensor. Can someone explain how the nose piece connects to the tilt adapter so I can insert the nose piece into the drawtube of the refractor?