Academy SB V2 diffs

[Brewer95]

Hi,

Ive been racing my Academy V2 for a couple of months now and im very pleased with the car as a whole. But I am having some big problems with the rear diff.

The rear diff diff keeps slipping no matter how much I tighten it up and the last race I was in it came off completly solid with no diff action but it was still slipping! Ive striped it down but cant see anything wrong with it!

Ive been racing touring cars for years and never had any problems with diffs. Is there anything different to consider when building a diff for a buggy over a touring car?

Any help or suggestions will be greatly welcomed.