Adjusting Freezer Thermostat (Model #5304513033)

[FishInTheDesert]

Hi everyone, I bought an old chest freezer that I want to adjust to use as a fridge. I am aware that freezer thermostats generally have a screw that can be adjusted to change the temperature range, and that many also have a "differential screw" (there may be other terms for it but I don't know them), which increases or decreases the difference between the cut-in and cut-out temperatures. I have a Frigidaire 5304513033 thermostat, and I can see two screws on it, but I don't know which is one and I'm having a hard time figuring it out through trial and error. Does anyone know where I can learn more about this part? Any advice or suggestions would be a BIG help to me.

Thanks!

Thermostat: <Thttps://www.frigidaireapplianceparts.com/PartDetail/Temperature-Control-Thermostat/5304513033/4546111>