Looks like I may have found/solved the issue 
  
I ran the second reactor through a bucket of RO for a couple days 
At first it had issues, but upon re-seating the canister it behaved properly 
  
Tonight I took them both apart to compare stuff and there it is ... 
  
The sealing gasket on top of the trouble cartridge was up and sideways a bit 
I've put it back where it belongs and it's been good for a few hours now 
  
I'll report back tomorrow with the final results 
  
Fingers crossed .... 
  
If it looks good I'll write a review as I'm pleased with everything else about them 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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