Need Atwwod Oven temp controller for my 1999 Sunny T-2553 Solaris

[Justaguitar]

My problem: I can light the oven pilot, and it remains lit. I then turn the oven temp control to, say, 275 degrees. The main burner lights, and the oven begins to heat up. At some point, the burner turns off (pilot remains lit), and the oven begins to cool. The burner will not come back on / maintain temperature.
I'm suspecting a faulty thermocouple, but can't locate one for this unit. Anyone know of a retro replacement oven control that would fit??? Also would like to find a new range top that would fit!
Atwood / Wedgewood
Model # R-W2130W1P

Thanks in advance for any help!
Stay safe!
Bud F