Checked out small tilt skillet unit and found unit is working OK when you turn it on high but it will kick off if you touch the knob. I checked gas psi, 4.17 wc and it is in a vacuum. so will order new potentiometer and return. 8-19-20 Found potentiometer incorrect. will order correct one and return. No charge for 8-19-20. 8-20-20 Installed new potentiometer and tested. sys ops OK.