Hello I’m knew here. I purchased an RODI system a while back. It’s been running fine for about three months. I noticed my particulate filter was starting to change colors so I decided to change the particulate filter and my first carbon block but now after I changed the filters when I shut water off to the system water continues to drain from both of my carbon block canisters out the wastewater tube. my water pressure was 80+ before I started so I had a ball valve installed but now after the change wide open my pressure is barely at 62. Please help I have no idea what I did wrong.