I have a 2001 yz426 and i had to rebuild the master cyclinder and when i put it all together and but it on the bike the front brake doesnt work anymore. I bled it and everything. I put a new master cylinder on my 2004 wr450 and the same thing is happening. Both the front brakes dont work if you guys have any ideas on whats going on please let me know. Thanks and happy Thanks Giving!!!!!!!!