I also just received my Naniwa 12k today and man am i glad i bought it.
Had that same problem of it sucking to my Dmt all the time so i was always moving it to the side with water to remove it.
It took about 5 minutes to lap it and then i took one of my restored razors that i thought was giving me a pretty good shave as i had finished it with a chinese 12k.
Now i don't no if it is psychological after seeing how everyone praises this stone as a great finisher but i got such an unbelievable shave, that it freaked me out.
As soon as i lapped it i did 50 strokes(maybe a lot as i do a lot more than that on my Chinese12k.)
Took a shower and proceeded with the shave.
I did 3 passes and no AGAINST THE GRAIN and got a BBS shave everywhere except a couple of spots under my neck.
I am always trying to improve my shave and this did it for me.
Now i have to finish off my other razors and see if this was just luck or this Nani 12k is that awesome as everyone says.
Thanks for the great info guys.