I have had some limited success with parenting the arrow head to the arrow shaft, then saving the two props together in one library entry. Thus, the .pp2 actually contains two props. The arrow head, being parented, stays where it's supposed to. However, deleting the item then becomes a two-step process of deleting the arrow shaft, then the arrow head. But it did solve some of the odd problems I was having trying to use two geometries for one 'thing'. I tried making the arrowhead a smartparented prop to the arrow shaft, but still when deleting the arrow shaft, it leaves the arrow head to be deleted separately. Okay, so now does anybody have any ideas how I can link two props together so they both delete when the parent is deleted? (smartparented items to a character delete when you delete the parent... why not when props are smartparented together?)