I never lost brakes but they did fade. Towards the end of a session I found that I was really pulling on them to scrub speed. After a few late turn-ins I started backing off the throttle early and not going WOT till the breaking zone. Sure the liter bikes were passing me that much faster but it also gave them a chance to get around be before the turns. There was someone who missed the turn altogether and ran off the end of the track, I think he was on a RSV4 demo and just did not realize how fast 200+ hp had him going down the straight. I was just trying to make it home in one piece and with the shiny bits still attached so I was not going to see how far I could push it till I lost the brakes.