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			#8  
			
			
			
			
			
		 
		
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			Check the timing advance, it maybe hanging up if the motor has ever sat for some time. I doubt your low speed jest are pumpng to much fuel.   Tach going haywire is usually a bad rectifier, your tach reading of 4200 may be wrong as well if the pulses are set incorrectly.   
		
		
		
		
		
		
		
		
	
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