LR Birdcage Question

Working on an older chassis and trying to get more hike and LR drive. Using a TWM birdcage and have been running in front hole on top. There are three holes front to back. Currently the birdcage is straight up and down and when Working the rear through the motions, the birdcage is not gaining any angle or rotation forward. What would moving the top bar back to second or third hole on top of birdcage do? It will get rotation forward on the top of birdcage but what will change in the driving of the car?

More forward with the upper bar will increase index over moving it back.

Cranky, I was out of town for a while. I did answer your PM now.