LOL..could've sworn that I see this problem from the majority of the cue work/shaft replacement requests from cues that end up in Japan.

I responded in consideration that the item in question is originating there. I get quite a bit of repair work here because the item has ivory content that can be intercepted by FWS if returned to the original maker for repair.
Cuemakers do their best to get straight as an arrow shafts but you have to remember that wood is a natural material that can have an oddball that'll puzzle the heck out of you. If your shafts are what you say they are then you'd be the most sought after cuemaker.