I've pretty much just ignored the problem and have been using my older boil pot rather than my keggle because of the issue, but I'd really rather use the keggle for fairly obvious reasons.
When the liquid gets down to about the level of the ball valve, liquid stops running. It seems rather obvious that I don't have a good seal in the system, but further inspection says I don't (or it's infinitely small and unobservable)
Any ideas on correcting this issue? It's really annoying having to use my auto siphon to get the remaining wort out...