Hi Stacey,
You can call Bintel and see.
Otherwise, have a look at this really simplified cell design. It is identical to the one in my 17.5" which was fashioned by the mob at Bintel before I got my hands on it. It has all the elements that make it work the way it should, but without the glamour. It doesn't get more basic and effective than this. The section on the mirror cell is about 3/4 down the site:
http://www.swashastro.co.uk/dobsonian.html