Kickr v2 jet engine sound help

Hi all

Got this kickr from a friend and it makes this crazy noise like an old plane taking off, at extremely low speed doesn’t do it but if you start to pedal it does and it’s maybe even worse free wheeling

Played with tension and ordered a new belt but that hasn’t come yet

Spinning components with no belt doesn’t make the noise, but think that’s a power issue as I’m not peddling

Anyone had this and solved it?

Old threads suggest bearings and belt but no one reports back to say they solved it or not