Recently my Specialized Allez with A-Class rims / hubs has been having some issues with the rear hub assembly. I noticed a slight grinding sound and could "Feel" the bearings while riding a few days ago. I took apart the rear hub and repacked the bearings thinking that this should resolve the issue. After I tightened down the axle the wheel developed quite a bit of side to side play. I tried tightening the axle cones to reduce this. It seemed to work so I went out on a short ride. About 1/2 mile in I heard the same grinding sound and had to head back. I pulled everything apart again to find that the axle had loosened during my ride, so much so that one of the washers had rubbed against the bolt filling the bearing race full of fine shavings. I repacked the bearings again and tightened the axle as tight as possible without making the bearings seize. The play is still very obvious and seems to be in the free-hub body.
Please give your best guess as to what it might be!
IMG_2955.jpg Edit: It is kinda hard to take good pictures of the bearings and the inside in general. As I said before, everything is as tight as It can go without the bearings locking up. That being said the play seems to be localized where I am pointing. (At the base of the freehub body where it attaches to the rest of the hub)