Neptune 2S extruder upgrade problems

Hello fellow printers!

I've decided to be ambitious and upgrade my printer's hotend. I followed this guide to convert my printer to a direct drive. I bought this NEMA14 motor per the instructions, but the instructions didn't specify how to wire it up to the stock Neptune 2S board. I just swapped it where the old extruder was and got everything assembled.

Started trying to tune it (Using Klipper), and things just got weird. I read that the motors can heat up while active, but this motor is getting HOT! Hot enough that it can melt PLA that's pressed up to the motor's body. Only takes a few minutes to get there, definitely can't print for long with it.

What are my next troubleshooting steps? I definitely don't want to burn my house down and will go back to my original bowden setup if needed, but I'd love to be direct drive.

Edit: Of course after I post this I finally find what's wrong. Need to tune VREF as well. I've ordered some ceramic screwdrivers to prevent accidentally frying my board and will be learning something new this weekend! Leaving this question here in case someone else needs the answer. Using this guide to tune VREF