I recently was checking my hubs, dura ace 7700, and found that the rear hub has a slight catching sensation when I let the wheel rotate while holding it in my hands. I immediately feared that a cone was shot, although I've felt pitted cones in the past and this was nowhere near as grinding as that can be.

When I got everything apart and cleaned up, the cones and cups looked fine. Hubs have about 5,000 miles, and I've been maintaining cup and cone bearings for years with no problems. I first rebuilt these hubs at about 4,000 miles, with new grade 25 BBs. Not ridden in the rain.

I regreased everything and reassembled with the same bearings. Now I feel the same small catch or tug when rotating. It doesn't catch at the same position during rotation but seems random. Happens the same whether adjusted for zero play or just a tiny bit of play.

Is this anything to worry about? Don't want to ignore this and let things go south but I have no idea what is causing it.