You might consider inquiring at one of the better rod builders, like Sage, Winston, etc.

Or post your question at theflyfishingforum.
http://www.theflyfishingforum.com/forums/search.php?searchid=2714967

"There's more to optics than meets the eye."--anon

"...most of us would be better off losing half a pound around the waist than half a pound on our rifle."--dhg