Why not try swapping in a new conditioner? I’d try to borrow an Isotek EVO3 Aquarius ($2000). Music Direct will "lend" you one for 60 days.
https://www.youtube.com/watch?v=peDcpldHYvc
https://www.musicdirect.com/store/IsoTek-EVO3-Aquarius-Aquarius-Power-Conditioner-with-Premier-C19-P...
https://www.youtube.com/watch?v=peDcpldHYvc
https://www.musicdirect.com/store/IsoTek-EVO3-Aquarius-Aquarius-Power-Conditioner-with-Premier-C19-P...