4028 always 100%

following this guide: https://os.ratrig.com/docs/guides/4028/ config attached; using octopus pro 446 Seems like PWM connection isn't being made? looks like !fan_part_cooling_pin points to pin PA8 which should be correct.

Connecting a 4028 fan | RatOS

4028 server fans are becoming a popular option for part cooling because of their light weight and great pressure and flow rates. In this guide we'll go over how to connect one and use it for part cooling. 4-pin fans usually aren't used in 3d printers, and many boards only provide 2-pin ports, but fear not! There's always a way.