So I'm trying to hone up a bigger blade, and I'm have a small touch of trouble with the BBW. My stone is pretty narrow, which wasn't a problem with my DA or my Tosuke, but when I'm using it with slurry on my B&A I have trouble--the slurry keeps running down the sides when I'm honing,and after about 20 passes it's pretty much all gone.

Any tips on stroke control to keep the slurry going? Or should I buy a wider hone?