Well saw this on another forum Post:
https://forum.duet3d.com/topic/7518/fans-on-different-voltages
2020-03-08_14-34-09.jpg
I assume the Mosfets on the board are damaged due to my initial wiring setup using the 24-12V regulator directly on the 24V PWM Fan 0 & 1 pins instead on converting the row to 12V via the V_FAN pin. They do not look blown from the pics, but something isn't functioning correctly anymore.
Hopefully this helps anyone else that may have made this mistake.