Thanks but I just got lucky with what I had lying around but no,no write up. I modified them just over a year ago and forgot to mention earlier that the base plates were made longer so that the rudder sits against the wall behind my desk for added stability and the fortunate thing about the holes in the steel plate means that this is all adjustable.
http://www.skeletoncrew.ca/forum/index.php?topic=701.15
link to my original post on the skeleton crew forums.:)