I have a pile of wound low Gs from Aquila. It is suprisingly well balanced. I'll see if I can publish the new design drawings with just 3 sub-bass strings since after spending a long time playing it last night I am not convinced once you have the root, third, fifth then relative minor, what more you'd need - 4th string through to 8th with uke tuned low G. I suspect, most players of this instrument would do the guitar player's thing and regularly retune and fiddle with the tuning of the sub-bass section. What I have learnt from playing is that the sub-bass strings are really 'accent' choices...