I am using DX-6I with Align DS servo 410,setting for cyclic : D/R Ele/Ali : 50/50, Expo 20/20, if you are using similar digital
servo, beside reducing the cyclic travel you may need to slow down the cyclic movement too or the heli would be
harder to control then the with flybar one.
here is the video, hope you guy would like it

By the way, can you tell what quad rotor head are you using? i am using the Rush/copterx flapping one..
[youtube]http://www.youtube.com/watch?v=cgFldMO263g[/youtube]