Some people...make that most people, put way too much stock in what the scales say. You had a car that was very balanced and had no anti-roll. You had to put a turn and a half of preload in it. That is NOT out of range at all. No need to put it back on the scales. It is what it is to make it go down the track. If it leaves hard and straight, drives well and acts fine when you step off, don't worry about what the scales say.

Monte