[David and Teresa]

No

But if there is pressure in the system, then this could be clue about the air leak. If there is pressure in the system AND the check valve is chattering, the air is passing into the sub system that supplies air to the potties, doors, and slide out air seals.  Meaning, the leak is in the plumbing around the 12V pump, the regulator, air lines leading to potties, doors, and slide seals.

This is what's happening. There are no leaks in the rear door or toilet. I have 2 doors to check. I've taken the 12v pump out and closed the line and no leaks there. I need to look at the regulator I guess. It's a pretty good leak, about 10lbs in 5 minutes. I can sit and watch the gauge move down.