I have 21" Bandits on the front of my KFX. IF i put the handle bars straight, i noticed that the wheels curve inwards in the front. If you stand behind the quad, the curve is so bad! stand in front, it doesn't look as bad,. but its noticable. Anyways, when I am riding, when i hit around 3rd gear and up, the handle bars shake like crazy, and i don't know why.. does anyone here?
I am thinking it is because of the curving in that when i get higher in speed the wheels are messing up when they roll..

please help!

 

You have to adjust your toe in. Loosen the locknuts on your tie rods and make them both two turn shorter each then check it with a tape measure. I don't know what you toe is supposed to be but they are usually 1/8 - 1/2 inch.