Fixing the Lead Screw Nut

I have been in contact with Snapmaker support about this but I was hoping my question might be answered faster here. I recently replaced the control board and hot end board for my dual extrusion module for Snapmaker Artisan but unfortunately now I am experiencing motor issue. If anyone knows what the lead screw nut is, mine isn’t centered within the iron buckle. I was told to “push the right extruder inward” and install the motor in place. Has anyone had this issue before and how do you push the extruder in?

Here you go:
https://wiki.snapmaker.com/en/general/troubleshooting/replace_filament_runout_sensor_of_dual_extrusion_module