LOL! Sounds like your in the dark as well.
I have some other attachments that can connect the camera to the filter wheel that will add about 12 mm to the length and I'll have a fiddle with the prism and move it further down. I might try playing with the prism and get it to just cast a shadow on the imaging chip then move it up enough to get rid of the shadow. I will take the suggestion on board and get it all working without the flattener and worry about that later.
See how it goes.
