The previous model was AVS2. AVS3=UFS Poppa.
Exactly this happened to me yesterday Ripple. I was opening the juice flow and dump, glug, glug, glug, there goes my juice.Not sure if over the day opening and closing the juice flow I had loosened the atty or was in that one turn.
I guessed maybe that is one reason why lmeo says to release the mouthpiece a little after tightening? Also wasn't sure if I had left the mouthpiece too tight when mine flooded/dumped.
All new kits contain those o-rings. Maybe Cam has still older kits