My uncle tied flies and would tune a soft bamboo fly rod by wrapping thread on the rod at selected spots to stiffen it. usually on the top section. he could also repair broken tips. he showed me how to do it. but I don't do it for anyone anymore as I am too old.. there are still people that can fix your poles like that if you want it done but they will need all the pieces that are broken off. or they will have to make a new section which may not suit you.