My Hope mono minis have taken to wailing like a pair of banshees whenever braking in the wet. Also noticing a loss of power too. At high speed on the road it's not a problem, presumably because at high speed they dry out quickly then resume service as normal, but on every descent this Saturday in the Lakes a godawful noise accompanied me from top to bottom. I also crashed into a wall very slowly as the brakes refused to work.
I thought the pads might have been contaminated with oil, but a) they're brand new pads and b) doesn't happen when dry.