I know that I have a ways to go yet in my testing, but, since I have added that o-ring under the positive block and tightened the air post up, I have gone thru ½ a tank full and have been twisting my air flow adjustment ring back and forth every few pulls to see if there is any juice accumulating around that ring like it did before. I am more than happy to report that so far, it is dry as a bone laying in the Arizona desert sun. As a side note, I am experiencing noticeably less air bubbles in my tank than before I took it all apart and added that o-ring and tightened it up. Could it be that I have (thru the help of Fad) corrected at least some of the Siren's problems ?? Stay tuned for more.