JADE RANGE (left) - 4/22/2021 - Michael P A - arrived on site and inspected unit and found all lilots lit. middle burner not lighting off pilot on low setting and barely lighting at higher setting. checked and verified manifold pressure 5wc was good but not properly being passed to burner. bad thermostat. will obtain replacement and return. customer requested QWP approval from will. 4/23/2021- John H - At location with follow up parts for zone 2 from left. I replaced thermostat and tested. I followed instructions given directly from manufacturer to calibrate new gas valve and found bypass unresponsive high or low. Please note zone 2 middle didn't heat outside range while on site but didn't calibrate properly as mfg instructions. I will contact mfg Monday to get further knowledge of grill status..