Hi muvo, thanks very much for responding. Just to confirm, you were using a newer generation? Or type? Corsair's naming convention is a bit confusing.
Essentially you had something like this installed on your "gen 3" PSU?
https://www.corsair.com/us/en/p/pc-components-accessories/cp-8920146/premium-individually-sleeved-psu-cable-kit-starter-package-type-4-generation-3-white-cp-8920146
If so, would this then work on the HX1000i, "Type 4, gen 3" ?
https://www.amazon.com/Corsair-CP-8920193-Premium-Individually-Peripheral/dp/B01MXXES03?ref_=ast_sto_dp&th=1
