Eric Hamlin

I have a B6 and 2 days ago i was leaving a buddies house and i had to let my car warm up all the way before i could put it in first. go home and i needed to move it later that night and it did it again but this time after it warmed up all the way it wouldnt even go in gear. my first thought was clutch isnt disengaging so it must be something with the hydros and then looked online for a bit and people talk about slave cylinders. so 2 days later i got the slave cylinder in (yes correctly) and it still wont go into gear when its running. when its off goes in fine. if i leave it in gear it lurches forward. ive been looking for 2 hours now and i have no idea what it could be. any one got any ideas?