I decided to cleean some kit last night, one of them being the 3D it was tasting a bit off. Soaked them overnight after rinsing a few times and the washers on the posts started rusting!! 
So ladies and gents I recommend that if you have the fasttech one toss the little post washers you don't really need them they just help trapping the wire a bit easier.
	
		
			
		
		
	
				
			So ladies and gents I recommend that if you have the fasttech one toss the little post washers you don't really need them they just help trapping the wire a bit easier.