Kon, you may find some answers in this Cloudy Nights thread. Have a look at the Baader diagonals discussed.
http://www.cloudynights.com/topic/49...he-63-reducer/
I ended up machining a shorter eyepiece holder section for my 2" GSO Diagonal. Had to remove 10mm so that I could easily reach focus using the .63 reducer with a Baader 8-24mm Zoom eyepiece.
Michael