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<p>[QUOTE=&quot;Howard Black, post: 3558043, member: 97119&quot;]Our definitions of &quot;off-center&quot; may not overlap, and the photos most likely do not do justice to the naked-eye view.</p><p><br /></p><p>The rim is about .3mm at the bottom and .8mm at the top. I don&#039;t call that centering. If I was working in my late father&#039;s machine shop at the Brooklyn Navy Yard and unchucked from a lathe a piece with such &quot;precision&quot; <i>he&#039;d</i> have called <i>me</i> a variety of things not fit for polite company.</p><p><br /></p><p>Moving along... The color I was referencing wasn&#039;t the color of the gunk, but the color of the red and green &quot;sparklies&quot; (<i>tiny</i> little discs of bright color with <i>highly</i> <a href="https://en.wikipedia.org/wiki/Specular_reflection" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Specular_reflection" rel="nofollow">specular</a> reflection -- rendering them nearly invisible unless the angle of the sparklie, the angle of incidence, and the angle of reflection all line up just perfectly; easy as pie with the naked eye, and damned near impossible with the crude photographic setup I am using at the moment).[/QUOTE]</p><p><br /></p>

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