Ran my CR at the Proline on Wednesday. The extra weight on the car is 146 grams of Rudebits plus the Ghea bulkhead (not sure of the weight) and 28 grams of lead putty inside the front bulkhead.
The car was really well balanced and felt good over the bumps and jumps. I will be trying some other stuff on Saturday ready for racing on Sunday at the "King of Dirt".