Worn out yolk?

Very interesting ...
I would think the yoke splines should have very little play on the output shaft splines . I would prefer not to order a not yoke only to find the same amount of play . I would like to hear how this bushing of yours wears after some mileage . Does it have a lubrication hole to line up with the factory one ?

No lube hole, but one just needs to be drilled and deburred to match the one on the bushing you take out.

Do you see or feel visible wear on your yoke?

An old timer at the transmission parts & shop where I grabbed the bushing said they wear a long time. I sure hope so.

He also said GM switched over to this material, and it solved a lot of problems for them. He's used them in C4 & C6's for years to resolve the slop issue, as they are a bit tighter than the babbit or bronze bushings.