On Sun, 25 Oct 2009 10:49:30 -0230, "don &/or Lucille"
If it bothers you, replace the control. They just plug in and they are
$10-15 at the appliance parts place.
This is really a pretty crude controller that simply uses a heated
bi-metal strip and a contact to select the duty cycle of the element.
Manufacturing tolerances are slave to a cheap price.