My expecrience with the rear hub carrier adjustment is just the opposite of what you said SebsCustom. When I attach the hub carrier to the arm in the bottom hole the car has less forward and side bite. When it's mounted in the top hole the car has more forward bite and side bite. I run mine in the top hole all the time unless I need more steering. I originally ran my hub carrier in the bottom hole. When our track was blown out and dusty I was told by a Mugen Japan sponsored driver to change it to get more traction. Now it just feels right in that position.