Hi all. Have a 5 ton A2. Just noticed that I have an air leak at the PRIMARY Air tank pressure tank switch, out the "weep hole" by its base. Is this normal?? It was just a fluke that I heard it as my ears are not "new". Does this switch only run the low air alarm? Thanks for the info! FWI.- switch screws into aft, top of upper outboard (primary) tank.