Originally Posted by erchn
I shall disassemble the car and see if I can find the tweak, though I'm pretty sure it doesn't exist.
I fully believe you when you say there is no tweak but the thing is the readings on the scales are useless to you right now because of the procedure you're using.
Balance L-R FIRST (use pins) BEFORE using the scales, then use the suspension on the scales. The scales are trying to tell you primarily about the suspension preload situation but you have disconnected this.
If you know the car is balanced L-R and is straight if you're heavy on opposite corners it means you need to back off the preload in those heavy corners and the car will balance right out just like that, like magic. It doesn't mean the car is actually heavy in those corners, as you balanced it beforehand, it just means the wheel is pressing too hard there.
The readings can only make sense if the car is de-tweaked and balanced beforehand, or the readings will be a combination of tweak, unbalanced preload settings and incorrect primary L-R balance all mixed together, which is what you've got, and there's no way of telling which is which until you separate out these variables.
Hopefully someone else will chime in with a better explanation I'm useless at it