I think my issue lies in the LHt. I thought initially I had a controller problem so I called and they sent me a new one. Same thing. Needless to say they are a bear to adjust. You need the patience of a Jedi. Just wondering if they have upgraded in the last year and a half to make them easier. I think it is easier in spring and summer. I have not tried high temperature cooks, mainly around 200 F.