Hey Mark, In the 'old' spectra, after you hold in the scan button & get the 'sel mode' message, use the mode buttons to go through the modes. When you get one you want, push the 'SEL' button. Multiple presses will take it through the priorities. To delete, use the 'DEL' key.
While the 'sel' message is displayed, you can also hit the 'SEL' button to change the priority of the mode that is selected. hope this helps. Tim
