Try putting this setting in site.config:
simpleMain: ,,print,view,cache,galleryedit,
And any other actions you want to show normal headers on.
In the next release I'll change line 1055 in engine.php to this:
if (strpos(',,' . BOLTconfig('BOLTsimpleMain', 'print,view,cache') .
',', ",$_GET[action],") === false) return;
So you don't need to worry about the beginning and trailing commas.
Cheers,
Dan