4 on-a-plate tuners for slotted headstock

[aroberts8089]

Does anyone know of a manufacturer for mandolin tuners with 4 tuners on a single plate - specifically designed for slotted headstocks?

Similar to the ones on Alison Stephens mandolin
http://www.alisonstephens.com/

any help would be appreciated.
Thanks,
Andrew

[MikeEdgerton]

Check out these (http://www.mandolincafe.net/cgi-bin/ikonboard.cgi?act=Search&CODE=02&SID=4856de7c3c72a10d) threads.