Any help would be appreciated.
The Adeptus Mechanicus Explorator article by Gav Thorpe is the only rules I can remember seeing for servitors.
Found here: https://www.mediafire.com/?8vogxgrle1kgg
There's also the expanded Dark Magenta techpriest rules. Although it doesn't specifically include servitors, some of the rules could be useful: http://darkmagenta.net/articles/Hes%20More%20Machine%20Now%20Than%20Man.pdf
Found 'em shortly after writing this. Sigh. Gettin' old.
Thanks, Cortez.