Yeah, too bad. I think Vap's onto the right idea there; I would just add that I do find that some of my juices are for some of my atties only. I killed an HH357 with one, but it lives happily in my Phoenix now. Even on the AGA, I use the juices that work well in it mostly. If I want that other flavor, there's always another device.
no doubt, in the end it just could be the juice. some juices just may contain much more sweeteners in them and from the description above I would tend to believe this. it may be possible when ordering these juices to ask if they could possibly reduce the sweeteners in them, but then again it may change them so much that you will not like them as much.