Personally I think the old style are better but a few people have commented that the vents are difficult to close initially when using the **itpart seals.
 
Old style 'look correct'. 
Foam gasket stuck on the vent seems a cheaper item to produce (rather than better ?) but aren't always cheaper to buy.....
 
 
Colin
				
			 
			
		 
			
				
			
			
				'56 Series 1 with homemade welder
'65 Series IIa Dormobile
'70 SIIa GS
'76 SIII 88" (Isuzu C240)
'81 SIII FFR
'95 Defender Tanami
Motorcycles :-
Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C, Suzuki SV650
			
			
		 
	
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