Run both Vulcan range ovens to 375° F and cycle. Gas pressure is 10.2 " wc and drops to 9.8 " WC with all burners on. Left oven reaches set temp and over shoots by 10° Oven cools to just under 360 and slowly heats back up to set temp. Thermostat seems to be reacting slow. Will obtain a oven thermostat for left oven . Right oven is at temp and cycles. Temp calibration ok. Customer would like to have done by Wed next week. but do not qwp (expedited freight) In service . Ordered through shop. 5/31/18 Removed old thermostat and replaced with new one. Tested for leaks, oven cycled and set bypass temps within +- 10f Oven is working properly.