Personally I would post this in the ask the cue maker section.
Joe Barringer out of Florida sales ivory and he is a cue maker.
Ryan or AKA rat with Meullers pool and darts ( might ) do it .
Dennis Searing might do it but there is a waiting list..........
Bobby Hunter.
You will find some cue makers are unwilling to deal with ivory because of the new laws .
I am not up on what laws have been passed, NY I think have passed some new laws on ivory.
I think I would some what educate yourself on the new ivory laws before you shipped your cue off.
Port authority/ customs is the people who know what the laws are.
They are easy to get in contact with.
they made me nervous when I called them,, they asked way to many questions.
So you might consider using a pay phone to call them.,