I received my new isolators today. Note that the center metal bushing is a lot thicker than it was before, leaving less rubber around it.
Instead of a welded-on flange on one end of the center bushing, they now supply two washers that go over the end of the bushing where it extends beyond the rubber.
One warning. While the soft yellow rubber was easy to push into the collar of the yoke, these orange parts are (thankfully!) not so soft. I spent quite a bit of time with a hammer and wood block coercing them to fit.
Tomorrow I'll give them a load test.