This was one of the tests, I could kind of do. I moved the entire extractor rod star assembly from the 28 to the 28-2 and it spun freely on both yokes, but it was only hand tight. The extractor star is not fit to the 28-2 cylinder so it did not fully seat on the pins at the back of the cylinder.

No noticeable wobble on the rod, but I am only using a visual reference not a dial indicator.