[BillSpohn]

We have two W130 ovens, stacked one over the other.
The upper oven does not seem to get as hot as the setting indicates.

I think I should replace the thermocouple element.

It looks like the thermocouple element is part of the thermostat assembly.
Is that true?

[kayakcrzy]

Yes, you will have to replace the thermostat, and the the sensing bulb is part of the thermostat. If you need me you can reach me at my web site at ApplianceEducator.com Tom