A:AnswerHi Brandon,
Thanks for the question. If the knob is continually falling off the valve, there may be a problem with the dial, or the oven may be overheating in the rear and causing it to become "smushy." We can help with any of these issues if you can please reach out to us directly via the support link on our website.
Looking forward to hearing from you,
--Kris M, Ooni Experience Team