Creaking clutch - not pedal or slave cylinder related

[jt15833]

My clutch has been creaking on and off for a while now, but I've had bigger things to fix until now. I made a post a while back and the verdict was wd-40'ing the pedal spring but that did nothing for me. With the car on the lift, you can definetly tell the noise is coming from the bellhousing.

I put some white lithium grease between the slave cylinder and the clutch fork with no luck. All that's left are moving parts inside the bellhousing. heres what i think are the possible suspects

*throw out bearing unit (ToB and peice it's on) rubbing on the input shaft housing peice*clutch fork on the pivot ball*cluthc fork on the throw out bearing unit*ToB on the pressure plate

Most likely I will order a nismo pivot ball and remove the transmission and re grease everything and look for the suspect. Anyone know of other ways to remedy this for the time being or heard of anything like this?