On Friday, October 16, 2015 at 9:12:30 AM UTC-4, Colonel Edmund Burke wrote:
No need to overthink this thing, son. The furst step's to buy an
accurate oven thermometer.

I did that before I posted. And I moved it to the centre of the oven because I figure that if the self-clean function cant clean the door (which it can't), the temp at the front might not be all that representative.

The prices for this thing are all over the place, from $115 to nigh on $200!

You can get them rebuilt for between $153 and $200, which kinda makes ya think a bit.

Then I found someone who offers to rebuild them to cure various symptoms for $99 but none of the symptoms he cures are temp related?? I emailed him and he said to check the thermostat is working properly before I send mine to him. (it is new but that might not PROVE anything.