Demon,
I may be late here, but Just Strings carries a few defferent sets of piccolo strings.
http://search.store.yahoo.com/cgi-bi...2Fnsearch.html
Shipping costs are out there though. Maybe you could go in on an order with some friends and share shipping.
I think they're all standard length, so you shouldn't have any issues with your 34" bass. Notice that all but one set (excluding the ABG's) have a plain steel G string. I've found the plain steel to have a slightly different timbre then its nickel/steel wound counterparts. And combined with callouses, an edgy or perhaps harsh bite at the front end of a note.
The LaBella M20's are stainless steel wound on all strings which i think will yield a more uniform tone. They are a heavier gauge though.
Fretlessrock, what's the build on the Zon piccolos? I didn't notice a breakdown by string.
M.