hey everyone, ive got my buddies 02 9r and i changed the front tire on it the other day, now as soon as the bike is in motion, it losses all front brakes...the lever goes all the way to the bar and doesnt stop...they pump up but as soon as the front wheel is in motion, i lose the brakes. i see no signs of leaking. now the bike has the 4 piston nissin calipers...i even bled the lines thinking they had air in them, but it never helped. any ideas what went wrong? thanks everyone!!