[cmac]

I got the smart grease in the diff, but both times I had trouble getting the diff back together. Is there a trick to getting the gear mesh perfect when rebuilding the smart diff? Both times I cleaned out the smart diff and put it back together I had a very difficult time getting the gear mesh smooth. I had to pull it apart and put it back together several times to get the gear mesh smooth. Most diffs I have put together are not near as difficult to get right. I don't think I did anything different each time I got it to the point that it was nice and smooth. Is it just the smart diff? Or was I just having bad luck? One other question, does anyone have any experience with the tuned flex chassis for this buggy? I'm thinking of replacing the chassis and figure I would go for that. I wonder if it's worth the money?