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<p>[QUOTE=&quot;Blasty, post: 8269772, member: 38375&quot;]Regarding the crud on the reverse, John Anthony&#039;s suggestion of acetone + toothpick would be the way to go, in addition to a cotton Q-tip for gentle wiping away of the loosened material. I&#039;d avoid anything more aggressive than that.</p><p><br /></p><p><i>However</i>, in my somewhat limited experience with crud clumps (if that is what they are) the metal underneath may be affected permanently. At the very least, you&#039;ll probably still be able to see where the crud was, since those areas will not have toned the same as the rest of the exposed surfaces.[/QUOTE]</p><p><br /></p>

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