Changing a Thermocouple Marsal SD 660

Hi TT! Anyone out there able to help offer any guidance on changing a thermocouple on a Marsal deck? They keep blowing out. I have spares always on hand so I can at least save the extra $65 the repairman charges for the part - but I know I can learn to change these things myself. I have the other end figured out but I don’t know where to start inside the oven. Do I start with that phillips screw or does the thermocouple itself get unscrewed? Thank you for any help!

On my Montague it screws into the hole. Don’t know if that is the same set up or not.

You will need to take out the screws and the assembly.