I've built a few. None of had issues that I know of.
The one quoted was my own engine.

I guess it's down to how the pins are done. You'll see in the pics that my block was slightly recessed for them. The cylinders were also honed after the pins were fitted.

It's all a bit of a lottery as far as the 257 is concerned. That is why I'd advocate building a 2.1 stroker instead. Cheaper, more reliable and far less in the equation to go wrong.
That's coming from someone with a built and sleeved 257 too.

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605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds