I bought my re-release second hand and found out it a ceramic diff balls, a few weeks a go while giving the buggy a shake down before a race, the gearbox started making a noise after investigation one of the diff rings had split

the diff had seamed rough before this happened
part my fault for not replacing the balls and diff rings and i had it to tight, i took your advice and read a few tips on the 2.25 transmission .Now new associated diff balls and plates all cleaned and re greased and its silky smooth now

thanks for the reply