Ken, Ive never had any sort of issue dialing a Nankai, but sorry to say I tried everything with that ballsy mod and couldnt get it totally dialed to my standards.
Double and triple checked correct bearing size and count...its all good.
One thing that I always check and forget to do this time, is the inside of the hub shell and driver for pitting along the bearing tracks. Although I didnt feel any irregularities while cleaning out the old grease. Gonna give it one more go later tonite and check for pitting. Perhaps one or more of the loose balls is slightly irregular? Dunno, but I guess that could be possible. Scares me to have to keep playing with it due to it having a ti axle. Either way it goes, its still gonna work better than it did when ya handed it to me.
I tested yours with the ballsy against the one I did for Kool with "caged" bearings, and his spins forever and feels smooth like a sealed job, while the ballsy just feels so so.
My review on the ballsy mod...
Completely not worth it. For one it takes twice as long to break down and build back up. Another issue Id have is that if youre out at your spot and gotta work on your hub, it would be very easy to lose a few bearings while fixing it, plus youd have to ad more grease to get the balls to stick back in there and its just messy. At least with caged you can just pop em in and out at will and wouldnt even have to get your hands greasy at the spot. I can see how the ballsy could give you a more solid wheel since youve got more surface contact between the bearings and shell, but other than that, Im still not sold on it. I'll keep my cages.