I recently added a “T” piece near my regulator which allows for a gas line to run into the kegerator (to gas 3 kegs) while the other hose has a gas quick disconnect outside the kegerator for various jobs. I’ve noticed over the past week that my contents based dial has been creeping ever so slightly down, indicating that my tank is losing or using CO2. I’ve sprayed all connections with a star san solution and have noticed no leaks. Another test I did last night was turn the gas off completely on the tank itself. The pressure indicated on the dial was 16 psi. I went to check the pressure this morning and it has dropped to 10 psi. All valves were shut completely. Does this mean I have a small leak somewhere in my system, or is this normal?