I’ve got a simple solution for you, it won’t be as great as a JLF, but it’ll do until you can get your hands on the real thing.
Akishop sells JLF PCBs. Part of my problem with the SE JLF is how shitty the switches feel. Buy the PCB for the JLF off of there, pull off your gate and swap them. Put a Seimetsu LS-33 spring in with the knockoff JLF spring.
It’ll be more responsive than the real thing. It’s still not Sanwa, but it’s as close as you’ll get for a while.
Plus, it’s cost effective.