Check out some of the different 777 setup sheets from Kyosho; most are for the Special 1 with the LSD front dif, but at least one is a standard front dif setup. Hope this helps.
Standard Front Dif.
http://www.kyosho.co.jp/web/download...41127_greg.pdf
Main Setup Page.
http://www.kyosho.co.jp/web/download...g/index-e.html