Here's a question for you Murray, since I don't know how it's supposed to exactly fit.
The 848 wheel is driven by the four pins. Does it also locate the wheel? When I repaired my wheel, I also had an 848 axle to test fit it, and the wheel is rock solid. No movement in any direction whatsoever. I took this as I did a good job re-cutting the holes for the pins in the right location.
But then there's the cone washer that sits against the wheel. Originally, the nut and cone were two different parts. I took this as the cone could shift a bit and settle into the wheel if it was slightly off. But then, that means that the wheel may not be perfectly concentric with the axle.
Aftermarket parts have the cone and nut as one piece, meaning the cone will push the wheel to be concentric with the axle. But if the drive pins or holes on the wheel for them are slightly off, then there will be an overconstrained condition. So are the holes for the pins supposed to be slightly loose to account for this? Or is everything really made to that good of a tolerance? How did your wheel fit up?