I have to pump brake fluid into my slave cylinder with a hand pump every week or the transmission starts to lock up. I didnt think it was a bad Master Cylinder because my brakes are rock hard. I do think its a bad bleed valve because I notice it only takes a tweak to loosen it and so much effort to close it that last time I used (g__ forgive me) vice grips. This morning i had to use my wifes car thereby losing my bet with my neighbor that my 186,000 mile $2200 Benz would be more reliable than her 1999 Cavalier. PLEASE HELP--have to go to NYC this weekend.