[BK911]

I know this isn't what you asked, but maybe somebody else will find this helpful.

I did mine a little different. I set my spring plates about half way. Then I measured my fender height. I wanted to raise my car 1". So I put the car on jack stands and disconnected the spring plate from the trailing arm so the spring plate was free. Then I measured the distance from the floor to a point at the end of the spring plate. The point I measured on the spring plate was approx. 3/4 of the way from the t-bar to the rear axle. So multiplied 1" x 3/4 to get 3/4". So I indexed the t-bar until the same point on the spring plate was 3/4" lower than my initial measurement. Worked perfectly and I didn't have to touch the spring plate adjustment.

I hope this made sense.