You are missing the point. Brand new, unused M96 shafts, right out of the box can demonstrate this run out. Shafts removed from running engines with perfectly good IMS bearings show run out to varying degrees, while many well used M96 shafts show no or very little run out at all. On top of this, the shafts from used M97 engine's do not show this tendency.
So basically, if you got an M96 with a shaft with run out, and it happened to be a single row engine, the odds were stacked against you being a happy camper.
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