Product review (3 stars): Prefect fit
Our old regulator thing was popping like it had a short.  I removed the top cover (knobs, display, etc) by removing two screws under the display and then two screws behind the oven.  It came off easily and I could see black burns in the old knob.  Removing the knob and two more screws was all it took to replace the regulator.  New one works like a champ.  I think our summer veggie canning which leaves the stove top on for hours caused a slow breakdown in the wiring.  Hopefully this one last longer than the factory.

Update 12/3/2016:  I installed this regulator in late March 2016 and it's already failing. It worked great for a little while, but I expected a lot longer use. Maybe mine was just defective...