I did an temperature experiment on an empty Smokette in April. Just do a search for "smokette temperature experiment." This should give you an idea on how the temperatures operate in a Smokette. I also did a "thermostat test results" with a new thermostat sent to me by CS.
I haven't be able to use it much since that, but the point is to set the temperature at 225-250 depending on what you are cooking, monitor the internal meat temperature and relax and when it is done it will be done. Big loads tend to act like a heat sink to moderate the oven temperature swings.