Setup: Frankie's first run went smoothly. I pulled a full vac on the 30# recovery tank and put it on dry ice slurry while I assembled Frankie and moved things outside. I refreshed the vacuum just before I began the solvent wash. Since this was the first run, the wash was with 5 cans of solvent (420 mil or 2.65 lbs.) and the material column dewaxing jacket had also been filled with dry ice slurry 45 min before the wash. recovered 2.2 lbs. of solvent into the 30# recovery tank. All good. Second run. Same setup with a 30# recovery tank on dry ice slurry.... The difference on this run is that i know the solvent tank is about one can short. So i went ahead and flushed one full can as before. When it was empty, i closed the valve and switched over to the recovery tank from the first run that has been sitting in the shed for a week or so. I opened the valve and heard the solvent flowing and verified flow through the sight glass. I also verified by watching the weight climb on the scales. The problem: Everything stopped after only just over 1 lb. of solvent had flowed from the solvent tank. My Resolution: I finished the run with 2 spare cans of solvent. Lessons Learned: What did I F* up? What if any were my other options to restart the flow? Thanks in advance.