We have a new gas oven which is consistently 30-40F low compared to the dial setting (we've checked with two oven thermometers). While we can get it calibrated as a service call by the manufacturer, I'd love to know how to do it myself. However, sources I've been able to search out via Google so far have been uninstructive and somewhat untrustworthy (e.g. eHow.com).
The range is a Summit TNM63027BFKWY 24" gas range.
Has anyone on SA calibrated their own gas oven?
Is gas oven calibration generally the same for most gas ovens in the USA, or does the method vary widely by manufacturer?
If (1) is yes, and (2) is "mostly consistent", then can someone point me to a good resource on calibrating your own oven, or failing that, describe the steps?