axle with green bearing problems

The whole point of having a Mopar is "Chrysler Engineering" which was a term from the old days when it meant something.
Yes, ball bearings are "adequate" and chevs and fords have them.
Why would I want something of lesser durability when I am not racing and looking for the last hundredth of a second in a quarter mile?
I like rugged dependability and the huge surface area of cone bearings.

Setting the side load is so easy.

When I bought out of round tires, I learned just how quickly ball bearings fail.