Charles,
If he is still in business, you should check with John A. Bradford in Ft. Worth. He has been building and restoring bamboo rods since 1952, so he probably knows a little about it by now. I found an E-mail address in Black's Flyfishing Directory which I hope is correct: jjabco@aol.com.
If that doesn't work, he is in the phone book. Hope you find this helpful.

Larry Compton