Ezy, from the pic, it appears that the 2ndary is not in the centre of the focuser tube. It should be. You have to move you head around a bit to line it up correctly. Use the white paper behind the 2ndary on the opposite side of the tube, as posted above.. Not thru the front of the t'scope...
Once again I'll say, use a film can or Cheshire. Do not rely on the laser...
L.