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<p>[QUOTE=&quot;Oldhoopster, post: 7900483, member: 84179&quot;]Notice how the areas are flat.&nbsp; That&#039;s a characteristic of mechanical (machine) doubling.&nbsp; This is not the same as hub doubling and rarely interests knowledgeable error specialists since it is a relatively common equipment variation.</p><p><br /></p><p>However, that&#039;s a pretty cool example of MD, and one of a very few ever posted on here that I would keep.[/QUOTE]</p><p><br /></p>

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