ok, so you hear an actual noise and so does your knock sensor, and it thinks its knock and it pulls timing, and the noise still happens?

sounds like mechanical noise to me. valvetrain noise, exhaust leaks, loose spark plugs, can all sound like knock.

the fact it's temperature dependent also might be a clue.

do you have any other evidence you're experiencing detonation? have you looked at your plugs?

you can use eehack to pull up to 15 degrees of timing manually while driving to see if you can get rid of the 'noise'. if it's the kind of knock that you assume, you should also be able to add timing and make the knock worse, or remove timing and make it go away, controlling the noise like a volume knob. if that doesn't do it, it's not knock.

i looked at your bin too and your timing advance is ridiculously low, unless this is a 5000lb+ flat windshield type vehicle. there's no way. (barring something crazy like a glowing peice of slag in your combustion chamber serious carbon buildup, or a serious lean knock)