Doing maintenance for a long trip on a 2008 Palomino Pony PU... I was going to replace the complete hubs on this camper but the ones I bought for my 1-1/16" axles were too deep and I couldn't get my nut tight enough to get the cotter pin in and there was no washer on the outside behind the castle nut when I took it apart. Seems like all kits come with a washer and you would think that it is needed. Looked a bunch and didn't find what I needed so I decided to repack the hubs I have. Came across this bearing on the second side. Wondering if it is going to be a problem? Looks good otherwise but there is a very small groove in the axle that may be the root cause of this. See pictures. If this axle hub needs to be replaced what am I up against? Thanks for the help!