Looking for a taper

I have searched far and wide for a 4-5 wt 12' spey or 11' switch rod taper that works well, 3 or 4 piece for bamboo, if some one would be willing to share it, I would guard it with my life and promise to build only one. I have a 5-6wt graphite rod and its just a bit heavy for were I fish most of the time.
Thanks,
Chris S
on the bank of the Ossipee