Here is the wiring diagram
If you go to the Sears parts site you will see Item 141 in the Maintop parts diagram. They call them switches but they look like thermostats.
Sears part number 318005217, AppliancePartsPros part number AP4316351.
I think these are the H. S. LIM. lower left corner of the wiring diagram.
I would replace the one that is close/under the element which causes the problem. Sounds like it's contacts are sticking closed.