Hello everyone

I thought i had a worn belt...
Idle, or engaged i can hear a ticking sound comming from the clutch.
I took off the cover, replaced the belt, and drove it around, and can hear it.
It sounds like its comming from the front clutch.
I checked everything i could on it, and everything seems very tight, nothing is loose.
Except those little bolt things all around... i think they are the buttons, not sure, there are 4 of them.
the nut itself isnt loose, just the buttons, i think thats how they go.
Ive been hearing this noise for a long time, i dont think its gotten any worse..
there are rub marks on the inside of the clutch cover, right over the front clutch.

any ideas?