I need your help badly, after an engine rebuild. I'm stuck with this noise who begin at about 2000 rpm. The noise is coming from everywhere, I cant even find it worst with the stethoscope...

Here is what i've check and what's new
- Tested 2 tensionners
- Double check timing
- Removed rocker cover to check that lifters are working well and spit oil from top hole
- Ensure that every lifters are moving well
- Ensure rocker arm are in good way
- Chain is tight
- Tested without belt to ensure the rattle is not from an accesory
- Compression is good
- Changed coil, spark cable and spark plug
- Tested removing each spark cable 1 by 1 to test engine
- Tested rod bearing
- Tested with and without clutch depressed
- Check valve spring to ensure none is broken
- Head gasket is on good side
- End play was ok
- Car have been running well on a 15 min ride
- No check engine

What is new:
- Main + rod bearing (King)
- Belt tensionner (OEM)
- Chain tentionner (OEM)
- Harmonic balancer (PRW)
- Release bearing (OEM)
- Pistons and rings (Wiseco)
- Cam, crank, valve, bore, etc have been measured by the engine shop.

Anything I should check before disassembeling everything? New chain, another tensionner, new set of rocker arms?