ok heres the story. Last summer I bought and XTD clutch kit and 8lb flywheel. my car has a boosted z6 on 8lbs. 2 weeks ago it felt like the clutch was slipping, revving fast and not going anywhere. so I ordered a new ACT street disc and installed it. now i have broke it in and finally was able to get on it. it was fine for about 3-4 pulls, but now it is doing the same thing. does anyone have any ideas what it could be? i was thinking it could be the pressure plate, but why would it just all of the sudden start to slip? please help

 

need some help