On Nov 27, 12:28*pm, dpb wrote:
On 11/27/2012 11:14 AM, Norminn wrote:
...

... The knob has two screws on the back which loosen a
little plastic toothy thing to turn to lower or raise the temp. I
slipped it two notches (10 degrees each notch) to lower the temp. Tried
it out....60 degrees too high with oven on for 20 min; forgot about it
for a while, and after about 90 min the oven was 100 degrees too hot! So
much for that...

So, you went the wrong way, apparently. *Do the same thing except the
other direction. *I'd recommend a single step at a time.

I've never had any trouble getting an electric oven to hold temperature
well near enough to setpoint...

--

It sounds lie all the adjustment procedure does is
move the relative position of the know to the shaft.
In which case, it would have to work. Unless something
is screwed up in the thermostat so that it's intermittent,
not consistent, etc.