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					Originally Posted by  stephen wilson
					 
				 
				He may now (and I think it's Above 3k, not At ), but at some point in the past it was recommended to not stay at that RPM. I'm not 100% sure it was Jake. 
			
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Flat6 say 3K. At least once, in response to a forum member asking about Pedro raising the issue of harmonic vibration in the m96.