Ok, if i am driving and i come up to a stop and i don't down shift through the gears it wont go into second or first, sometimes it wont go into any gear. Occasionally even if i do down shift it still wont shift when i stop. I just replaced the master cylinder since it was leaking and figured that there was air in the system and that's why it was doing this. Nope, its still doing it. Do i have to replace the slave also? Anything else it could be? Thanks in advance!