MP does not detect gimbal XF C-40T

Hi guys how do you set up a gimbal for ROI tracking in Mission Planner? MP can’t detect the gimbal in the Hardware ID page.

XF-CT40 Gimbal (Mavlink capable)

Gimbal connected from its UART TX/RX pins to UART3 of Matek F405 Wing V2.

Latest firmware on all hardware & software.

AP_Mount & XFRobot enabled in the custom firmware builder.

RC10,11,12 set to 212, 213, 214 as per the ardu docs.

RM TX12 + Nomad + DBR4 connected via Mavlink mode on 100Hz(FULL).

Serial1 & Serial3 Protocol set to Mavlink2.

MNT1_TYPE = 14

I can control the gimbal with the XF Headtracker which I mapped to CH10,11,12 on the radio, but can’t controll with Mission Planner. Getting a Prearm: MOUNT: Not Healthy warning.