hey just a thought does your t-stat cover housings have water hoses off them or are they solid covers? the type with tubes are what Ferm was talking about the bypass system the solid covers don't open bypass at higher rpms
		 
		
		
		
		
		
		
			
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1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
			  
		
		
		
		
		
	
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