Mapping Home Assistant blinds position to HomeKit position

I have 25 Sunsa blind controllers connected to Home Assistant and I added them to my HomeKit bridge but HomeKit treats the position values differently. Sunsa has -100(closed up), 0(open), 100(closed down). Home Assistant has 0(closed) and 100(open) but I’ve been able to get it to understand the Sunsa values correctly. HomeKit seems to view the entire range -100 to +100 as closed-open.

Any thoughts on how to get them all working together?