After a couple of back and forth emails with White Industries, it would seem that the hub I bought has longer bolts for aluminum dropouts. I've ordered the shorter bolts and the correct axle ends from them. A tad expensive, but if it makes everything fit just so on my bike, that will be nice. I also think my hub is an older style, as it doesn't appear to have splines for attaching the fixed gear. Looks to be threaded.