First, I apologize in advance for intruding upon the ATV community, but I am desperate, and am turning to the ATV experts for an issue I have with my Chinese built "Reverse Trike" of which has an ATV front end.

I have a problem with the front wheels, shuddering/tank slapping, etc. at high speeds, and hope you folks can help with suggestions on whether the problem is due to negative/positive camber/caster, toe-in or toe-out, or a combination of all.

I have a photo/video blog of this Reverse Trike at:

Reverse Trike - Roadrunner 300 - KillerMotorSports.com - a set on Flickr

Which in some of the photos explains what I've tried so far in order to make the trike safe for highway travel. I'm now turning to you folks, to see what you do to make your front end's behave at higher speeds.