I replaced both the upper and lower oven temperature probes in an effort to correct the un-even oven temperatures. I've had issues with this oven ever since the Autocleaning system was utilized. I used my digital temperature probe system to monitor the oven temperature and found that the oven wouldn't hold steady with a fluctuation of more than 50F _+/-. Changed the probes and after a couple of hours of cycle time, the temperatures are now closer to 25F+/- which is tolerable.
Easy repair. Removed oven doors and grates, then shut off the Oven breaker in the house's main electrical cabinet. Located the temperature probe in the upper right top of the oven. Using a Phillips #2 screwdriver, removed the probe and gently pulled out the wire/plug. Reverse order to complete.