I bought a 2003 WR 450, and love everything but the front brake. The lever pull is mushy, and even after bleeding the brake twice with new fluid, I can still pull the lever back almost to the grip. I adjusted the lever for full extension already. I want to be able to pull the lever without having it come back against my other fingers that are still on the throttle grip. Do you think I might need to replace the internals on the master cylinder? Thanks for your help.