I have used a digital scale to measure the tweak. You need at least 2 scales. 4 would be perfect. Make sure they are on an even platform, reset the scales to zero and just place your car.
You can see the weight distribution there. Adjust the collar on the shock to achieve the best possible even weight distribution. It's hard to get perfect,but at least you are getting the best. Sorry I don't have the picts with me. Perhaps you can visit team IRS.