7-1/4 Bearing Noise........

I have a 7-1/4 rear in my 67 Cuda...........OK though, it's just a cruiser.......I have a nice 8-3/4 all rebuilt and painted ready to go in the Cuda OR my Duster project (I'm torn.......)..............NOW, after jacking up the rear and running the car at idle speed, I've found some problems........

One is that my rear wheels are less than "round".......I figured they were a little off..........they've been around the block for about 40 years or so.......no big deal though.....

But SECOND, I heard a rattling on the passenger side axle........I shut the car off and spun it around, and sure enoufff..........Sounds like a glass full of marbles when she turns..........Driver side is OK...........

My question is this..........Without the expense of investing more dough into a 7-1/4, BUT to buy me some time in the midst of my projects, can that axle bearing be "repacked" and quiet down a bit ya' think?..............

..........and if so, is there anything ominous I need to know about pullin' that axle out of a 7-1/4........??? I used to do it with my eyes closed with 8-3/4's, BUT don't know anything about the little ones.......anything I need to know, or will it just pop out for me? What would I be up against? Will I tear up the seals if I try it?

Lookin' for a quick and temporary semi/pseudo/kind'a like-a/fix for the marbles (which I HOPE are just dry bearings........)

What say ye' ?