I have to agree, Sean...the lack of sharping levers (or some method of quickly detuning the sub-bass strings) has been my Emerald Synergy stumbling block. My reason for using partial capos in the first place is because I hate having to re-tune strings, especially onstage! With partial capos I just put them where I want them and, voila!, instant alternate tuning.
If it's too difficult to re-engineer the sub-bass head for sharping levers, perhaps some other method could be explored, eg. something like the
Hipshot Bass/Guitar extenders (though the flip lever would have to be perpendicular to the currently available Hipshot design) or, if individual "nuts" could be incorporated into the instrument design then something like the
Pitch-Key could be used?
Phil