Very interesting. I have pics of both hubs, the old John P repops, which were fine for the last seven or so years other than a mild thump and the relined ones I just got off of ebay.
The bearing race on the ones I just got sits about a 1/4" or so deeper into the hub than the John P repops. Hmmmm ???? I didn't change the races in the ones I just got
Below is the John P repop hub that I just got back from the machine shop, that were fine on the car for years. This one is going back on in a few minutes.
https://photos.app.goo.gl/KxmYjzrF2rv6W8Ra7
And below is one of the two that I just got off of ebay that hit 300 degrees a couple of days ago. With this one, the race is set about a 1/4" deeper into the hub. This drum is heading to the machine shop to get that race replaced and turned since its now thumping pretty well. Wonder if this is the issue? Shoes weren't dragging when I took the drum off. There's nothing else that I see wrong.
https://photos.app.goo.gl/dv4SuR2DYJ1SHkYb7