The connector on my Maxi RoughStack seems to be loose.  When I (gently) screw a carto on, the connector wants to keep spinning after the carto finally "catches".  I also noticed that the connector will raise up from its "sunken" position as well.  Is there a way to tighten it?
	
		
			
		
		
	
			
			 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		