Im almost finished. My friend did drove his this weekend. on a low traction hardpacked dirt track.
He started with 75K in the centerdiff, went down to 20K and now running 5K in the centerdiff. That has made the car much easier to drive. this car has an amazing amount of steer througout the whole corner.
We guess that when you run this buggy on low grip hardpacked dusty track it is 7k front - 5K center - 3K rear diff