Hi Oggie,
When I first tried to image with a Toucam thru my 12" dob, I couldn't pull focus either.
What I did was I moved the mirror up the tube as far as the adjusters would allow. That allowed me to pull focus.
With the switch hitting the adaptor, I just used the angle grinder and ground away a section for the switch to sit in.
The Negative Profile adaptors do not work with Toucams. Because of their flat body they won't recess into it.
The 'mirror up the tube' trick should solve the problem
Also, I have started a Yahoo Group for Modified Webcam imagers if you want any help with imaging with one. It's only a few days old
http://tech.groups.yahoo.com/group/m...guid=294103107