I had a problem about a week ago with my front brakes. Leaving work one evening I went for the front brakes and whoops there was nothing there. No pressure no braking. The Leaver went right to the grip. Stopped with the back brake and pumped the leaver half a dozern times and pressure returned. Since then not a problem. My question is.. What happened? Has anyone else had it happen? I've checked the reservoir and the lines. No leeks.