I've used

http://www.sjscycles.co.uk/product-A...-CLK-17650.htm

And it works fine.

My hub has the fine splines, but I don't see how a center-lock would attach.
The end of the hub is flush on the end of the splines. I do see threads
internal to the very end of the hub. Is this where the center-lock locking
ring attaches?

thanks.