Car bogging from too much bite

[dualdj1]

Why do you suggest this rather then at the frame?

going up on either end of j-bar raises the roll center, which means less weight transfers right and will loosen the car. taking rake out applies less force which loosens. So you can go down on the frame, but it has less effect than going up on the pinion, since down lowers the roll center.

http://www.afcoracing.com/tech_pages/panhard.shtml

caveat: If you have a lot of roll steer in your bar settings, going up with roll center can potentially tighten the car, and going down can loosen it. Just bear that in mind.