With the DMK41 on the Lunt LS60THa Solar scope you juust miss out on capturing the full disk. I manged to get it working using an AstroPhysics  .67 Reducer but had to mount the camera much closer to the reducer. 

The most dificult part was getting the camera close enough to the reducer so that I could still achieve in-focus. I did it with about 3mm of focus travel left and that gives me the full disk using up nearly the full frame with enough room to show large prominences. I only managed to get it working because I hapenned to have a very narrow profile 2"-1.25 adaptor. Most of the standard ones are a bit deeper and that resulted in the ccd being just that bit more further away and not being able to acheive focus. I fitted a 2 in tube to the blocking filter, slide the reducer inside the tube, then locked it in place with a nrrow profile  2 "-1.25 eyepiece adaptor.