For some reason I always called a flat top a grill
Thanks for responses , it was one of my techs that  installed it(25 plus years experience) and he really despises
the SIT controls and teddington thermostats
Bulb in proper, gets to 410F shuts down to minimum flame setting
We did just receive calibration instructions from factory which involve turning nut that is mounted
right underneath manifold 1/64″, tech saw that and just shook his head
Normally we would't even try to calibrate thermostat more than 75 degrees out of calibration but factory says it should work
I'll try to update when we do this next week