After 4500 miles I thought it was time for some new bearings. When I got my front hub disassembled I found that the cones look fine on one side and have pitting, actually more like radial striations, on the other half of the contact circle. When I got the second cone out it was the same. I don't see any sign of pitting in the hub races. Any thoughts on this pattern of wear? I had expected it to be more uniform. BTW, the axle does not appear bent.