308 clutch problems

Hi I'm still having problems with my clutch.It feels really notchy when I depress the clutch pedal.This is a new heavy duty AP clutch that was put on 3 months ago.I've checked the cable and it seems to be alright.I've greased up all the moving parts but it still feels notchy and gets progressively worse as the car heats up.Take offs and parking seem to be the worst but normal driving gear change doesn't feel to bad.I've told my mechanic who did the work and he told me to bring it in which I will next week.Anyone want to chime in on what it could be?Car is a RHD 308GT4.Thanks in advance