Ran a gig last night with some cryo jets. They tested just fine and we shut off the tank to preserve fluid. Came time for the show and they made a lot of noise, and no plume. Went to fire the second cue, and same thing. All the noise, none of the effect. After the house cleared we fired them again and held the valve open for 5-6 seconds and still no plume. The hoses and tank weren't particularly warm, and the tank was cool to the touch so it's not like the fluid evaporated or whatever. System spec: 4 Sigma services valves 1 50 LB siphon tank of liquid C02 about 15' of hose to 4 way maniofld Then another 10' to each valve Any thoughts are appreciated. Thanks!