Whining noise? I'm stumped.

[RBR]

Lq9 motor, with TKO600, New clutch and hydraulic throwout bearing.

Put it all together and started hearing a whining noise. It is loudest when idling.

I took off the serpentine belt, still had the noise.
I replaced the throw out bearing and noise with first test run. I also took out a spacer for the throwout bearing.

I push in the clutch still makes the noise?

pilot bearing looked fine?

I'm Stumped!