stage 2 act clutch sounds

ok, i just got a stage 2 act heavy duty clutch put in and it is making some weird sounds, i know it isnt the same kind as my stock one, but when i am easing off the clutch it almost sounds like the clutch is made of paper, i can hear it kinda hissing, and when i pull in my garague after driving, it kinda makes a clicking sound, the shop told me that it will make those sounds for about 500 miles untill it breaks in which i thought was legit, but i have put about 1100 miles on the new clutch, and it is still doing that, anyone else have this problem? it’s not soooo annoying where i would take it back and get a stock one, but i’m just wondering if it should be making those sounds