It is getting a little water in there, and it gathers in the carpeting and goes mostly unnoticed except for the condensation from temperature changes, which you have noticed.The moisture can be coming from the small drain not being sealed. This drain turn 90 degrees in the box and drains out the rear.The lock could easily be causing that much drainage. Make sure the T Handle seal in set into the lock assembly. We doubt the livewells are crossing over, as these are totally separate boxes, though we have seen this.The simplest way to find this is the water immersion test, where you put brown paper, like grocery bags, in the box and covering the floor. Then take a large canister of water as in 10 to 20 gallons of water. Make sure the lock is set, and the lid is latched. Now with the boat in the nose up resting position, dump the entire contents of water on that lid, and allow it to static drain off. This will take a few minutes for the lids to drain the water from the carpeting. This drenching of water floods the lids with worst case scenario, and it will find the leak. The leak will appear as a droplet enhanced in a dark color on the paper, and now you can address the leak with confidence you have found it. Key areas are hinges and bolts there, locks loose and needing tightened back into the foam (foam compresses and locks loosen in time), the actual key way in the lock, the drain area in the flat inside corner at the white fitting and lastly just a bad fit from a lid that has been bent a bit. This can be rebent or tweaked as the lid may have been bent from something getting closed in the lid. Hope this helps! BCB