mine is also scratched. Last weekend we had our final race in the national cup here in Norway and we ran on dirt/gravel and my spur gear where raped by a small stone getting in on the underside of the spur gear. And the area is so tight. I solved this by putting 2 mm shims under the centerdiff mounts. It got me around 3mm clearing underneath it then,
Look at this video from the race. My buggy is nr 5 black and yellow. the beginning and last half of the heat shows my car alot. It was kinda slippery and it had rained and started raining
I had 300k in center on this and it worked perfect. 7,5turn motor
https://www.youtube.com/watch?v=mfVW...Nu0n9sSXA8sKxg