Zx5 keeps killing rear diff

[haggis]

Just popped the rear diff in my brushless zx5

Seem to be having a terrible time with it

Its got a 4600kv flux motor and runs indoor on carpet.

If i let the slipper run at a normal tension it slips constantly (tried new pads and the rest)

Now that ive ran with it pretty tight its killed 2 rear diffs.

Diff balls are now cubes and bevel gears are stripped.


Is there an uprated set up or am i going to have to buy one of those god awful durango things that the rest of my club use.