I assume the oven thermometer works by supplying a temperature-dependent current or voltage to whatever controls the heating elements. It should be possible to

I assume the oven thermometer works by supplying a temperature-dependent current or voltage to whatever controls the heating elements. It should be possible to mod it so that the temperature reported is half of what it actually is. That way, you can set your oven dial to 400 F and actually get 800 F. Bonus points for installing a 1x / 2x switch so you can toggle between normal and high-heat modes. Sure beats hacking off the cleaning lock with garden shears.