rebuilding diffs and........

[captainlip]

currently rebuilding my diffs and fitting better seals and shims so it meshes better but the rear diff crown has had the tips sheared off and small shards of metal in the gearbox case.

this is the second one ive damaged and last time I ripped 4 teeth clean off, since then was told brakes were to agressive so turned it right down and reduced brakes 25%

so whats still causing it to strip? its £12 a go with this part!