just get one from tony ....
i know a lot of BB's that have changed hands have had their shafts swapped out with generic ones ...
no one who has a BB with 2 shafts is going to sell you one and if they are, chances are it's not a BB shaft any more.
i paid tony $400 per for the last pair that is on my parabolic ...
went there with the cue and the 2 shafts that came with it ( got it on the secondary market ) and he actually threw them in the garbage !!
over the next 3 days he mated 2 new shafts ... you think all shafts are created equal.. they are not.
if you have BB and need a shaft, there is only one call you should be making... get an original or sell the cue .. those are your only real options...