KitchenAid KSEG950ESS5 not coming to temp

Brand: Kitchen Aid
Model Number: KSEG950ESS5
Main Symptom: oven is not coming to temp and takes FOREVER to heat up and then will not hold temp
What happens & when: My oven does heat up, but it does so slowly and never reaches set temp. I can hack it a little for cooking by setting it for 50 deg F above desired temp and it will reach that but then it wont hold it. For example, if I keep 350, I set 400, and it will get to 350. If I need 450, I set 400, and it will get to 400. Broiler works.

Error Code (if any): F8E0
Parts or tests already tried: an appliance repair man recommended replacing blower fan and temp sensor.
Photos / video link:

You will want to test the oven sensor to ensure that it has a resistance reading of 1080 ohms at room temp. If it is good then check to make sure that there is power to the bake element. If there is proper power then this will most likely be a faulty element.

Thank you. Do you have a youtube video or manual that shows me how to do these tests?

Here are a couple of videos that should help with testing. https://www.youtube.com/watch?v=dcm7HDACL5g and https://www.youtube.com/watch?v=6jHbdIWQkUU

Thank you so much! I will test and get back with you.

Thanks. We tested the temp sensor and cooling fan. Temp sensor read fine 1088 ohms.

Cooling fan had a resistance of 70 ohms.

I totally forgot to check the bake element🙃.