Need some help on this one. Front brake just stopped working on our last ride. I got home removed the Master cylinder cap and the fluid looked really dirty, almost black so I unhooked the bottom line at the caliper and drained the fluid. I blew out the line to get it all out. I then saw some little black particles in the Master clyinder so I took it apart and cleaned it. Filled it all back up and bled the crap out if it until nothing but nice clean fluid comes out. I still can't get any brake at the lever. If I squezz really fast and hard I get brake but then if I let go and squezz again...nothing. is the caliper or the master cylinder it just seems like the fluid is bypassing something somewhere.