Does anyone know where and how much new lockin hubs cost? Warn, Mile Marker, stock. Can I just buy new o-rings for mine? Thats really all I need, I want to be sure they don't leak through the dial. Also, is there sapposed to be a seal at the end of the axle tube. If not what keeps water and mud out of the differential? What about the bearing inside the spindal can that be replaced or do you have to replace the whole spindal?