I think I've done it all and it still is very slow to heat. Takes 20 minutes to reach 400 degrees. Here's what I've done.
1) Lower element has continuity and 240 volts, bottom of oven is boiling hot, touched with wet rag
2) Broiler element has continuity and 240 volts, operates intermittently and never glows read or reaches boiling temperature, touched it with a wet rag
3) When in broil mode broiler element glows red
4) Replaced temperature probe
5) Replaced controller board
6) During operation upper and lower elements click on and off, during preheat upper element starts clicking off within 20 seconds

I'm stumped.