Sigmas to scheduler input for Ksampler (want to use flux sampler)

I'm using the MultiGPU version of Ksampler, which only gives me the option of selecting from a list of samplers or branching it out into another box that only allows me to select from a list. I want to use the flux sampler, which outputs a sigma node.

Is there anything out there that converts the sigmas into something that will allow me to connect to the scheduler input on Ksampler? The output is pure arse on any of the built in options and the flux sampler gives me extremely good generations.

I can generate just fine with the custom advanced version, but that doesn't support multi GPUs. I'm not after suggestions for alternatives to Ksampler as the only one available to me in the multiGPU pack is Ksampler.