Just saw a response in another thread from Mike H. at Englander on the "mysterious" lower 3 buttons and the debate over whether they have any influence on the higher heat settings. Here is his response....this should clear this up for everyone permanently (thanks Mike!!): "It actually it depends on which model stove it is , which board, and which revision chip it is. •Igniter boards: it has play in higher ranges. •In the “non igniter” boards it only affects the lowest two settings (1-2) • All top feed stoves it affects all settings •Bottom feeders - Contact Mike Holton at Englander so he can see what revision chip the change was made for, but as far as stoves with original equipment built 2003 and prior (non igniter), the presets only affect heat ranges 1-2"