Product review (2 stars): Poorly designed knobs so took at shot at reinforcing them
The knobs break very easily. I called Jenn-Air to ask if they could suggest another kind of knob and they had zilch to say. After going through about three knobs in two years, I followed someone's advice and took at shot at strengthening them with two-part epoxy and thin wire from the hardware store. Coat the stem in epoxy, then tightly coil the wire around it and let it set for a day. Put another coat of epoxy on top of the wire and let it set for another day. Be carefully not to get any epoxy in the opening at the bottom or it won't fin onto the stove. Cut the remaining ends of the wire off. I just put my newly modded knobs on the stove and I will post back in a few months.