Was doing a really ratty jungle downhill where I was riding the rear brake pretty hard and the pedal went down to the footpeg. A complete fade. I was expecting to see brake fluid all over the rear disc, but it was dry. Everything looked just fine. We stopped for a bit of a break and when we took off again, no problems whatsoever. Whatever had caused it had stopped when the unit had time to cool off. Anybody ever had this happen to them? Is there a cure?