172/Cup rear brakes

[Jon1978]

I find that there is far more brake dust on the rears than the front wheels. I thought this might be as a result of a prob of bias in the Cup wheels. However, SilverRSC has the same issue with his normal 172.

Any ideas why there is more dust on the back wheels?

Jon x

 

[swelch]

Mine was the Bias valve as the rear brakes were operating 50/50 with the fronts.