Lady M,
John and I have warped our minds out thinking bout cha....and we both agree if you are getting a bunch of 
juice in your carto the SYM must have come out of the carto after you've pushed it down into the 
tank or somewhere within the time that your filling.  It's happened to me, yet it was really quick when I knocked it out... I felt it happen and just put my finger on the top of the SYM to insure I wouldn't bump it again.  And actually for us... and this is just a preference kinda thing... we like to loosen the 
tank from the carto, spin it around clockwise a bit, then take it off the mod to fill.  We find it's a bit easier to hold in our hands.... like we show on our video's.
Hope this makes sense and helps at the same time...
