[Elecraft] K4 - AM Sync Sideband Selectable

[Bob Galerstein]

Am seriously interested in a K4 (Already have the KPA/KAT 500 combo) - 
Big into ham DX'ing and just as into AM broadcast band DX'ing. I know 
the K4 has AM selectable sideband sync detection. Question - What are 
the ergonomics to activate it? I currently use a Drake R8B for AM 
DX-ing, and its ergonomics to pick the upper or lower AM sync sideband 
are superb. Is the K4 just as simple to use with this? Thank you. Bob W2VGD