We just put 16 in service. We're experiencing a problem with the cylinders leaking air. Not sure where its going, since we figure if it leaked into the pack the PASS would alert. Starting the cylinder at 4500, the best ones sit at 4000psi, the average ones are around 3000psi, and some go entirely dead. Happens on packs on both the engine and ladder, in the pack and spare, as well as in spare packs at the station. If anyone else is experiencing this, how was it resolved? Im not here as much as I used to be (damn work firewall!!) so please Private message me with any info. Thanks!!