Here's a nifty trick if it still works that i had forgotten about.
You can
1: take a packy with your bag of items in it and target the packy
2: hold the bag in cursor while hitting your macro to stable/last target
3: bounce the bag off something so it goes back to your packy which is now stabled freeing up 1600 stones of space. (never tested this past server maint so don't cry if your stuff poofs)
You're welcome
