My buddy Kurt, W6PH, who is not on the list, has a K3S. Recently the VFO knob has been intermittent and it is now total fail. Does not change frequency. When he goes to CONFIG or MENU, VFO knob does not change anything. All other knobs and buttons work including VFO B. Kurt called Elecraft support and was directed to voice mail. Any ideas? 73, Hank, W6SX