My castle nuts don't fit.

Problem: On some axles the plating fills in the threads and makes it difficult to put your castle nuts on. If your axle did not come with castle nuts then you must use your stock nuts.

Solution: Secure the axle. Put some axle grease (not Vaseline) on the threads. Make sure the castle nut is perpendicular to the axle. This means make sure it is on straight! (See picture below and remember your warranty does not cover damaged threads). Take your crescent wrench and turn your castle nut 1/8 of a turn and back it off, 1/8 of a turn back it off until the nut threads itself all the way down. Remove the nut and wipe off the grease, install your hubs in the normal way.