Nice Vid, but at 57 sec the sliders bottom out and you can see the axel get lifted up nearly off the pavement. That's the purpose of these vids is to see this kind of stuff. Looks like the slider brackets need to go another inch forward or so. Better shock control could help or Fix it as well.

Edit: Also right rear/rim or axel may be bent, slight wheel wobble going on. No biggie though.