i have a 1999 kx250 and took it out to Ocotillo Wells last weekend (that place is awesome...) and i ended up shredding my front brake line down where it wraps under the fork. so i went home and bought a new brake line, put it on, proceded to attempt to bleed the brakes but never got any pressure. at all. never. i called someone and they said that there is a piece in the master cylinder that goes bad when you lose your line. how can i fix this? can i buy a rebuild kit? could that be the problem, or is it something else? i'm sure i was bleeding the brakes correctly.