I'm using Boge cartos (3.0) on my 510.  After the initial fill (I make sure it's thoroughly saturated), I vape happily for a little while.  Then it seems like it needs topping off because the vape changes (less flavor, less vapor...you know what I mean).  I look in and see the top of the filler isn't juicy anymore.  I drop some more juice in.  More times than not, I then start getting juice coming out of the battery connection end.  
I just don't understand how it can vape like it needs topping off and look like it needs topping off, but really doesn't need to be topped off.
What's my problem?
	
		
			
		
		
	
			
			I just don't understand how it can vape like it needs topping off and look like it needs topping off, but really doesn't need to be topped off.
What's my problem?
 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		