Chris King Classic Front Hub Bearings

[ColonelJLloyd]

I recently bought an unused Bontrager by Chris King front hub. I didn't think to ask if it spun smoothly. There's resistance in there somewhere which based on my reading I took to be the bearing cap adjustment. It's not, though. I did what I could to flush the bearings, but not much improvement.

Is this just a case of dried up grease in a 25 year old sealed bearing and they need to be replaced?