I did some experimentation and the Attributes of the Callout seem very buggy once you've set them using the "Leader Attributes" dialog. It looks like the most reliable way to define Callout Attributes is to create a Callout class with the settings you want, make that class active and insert Callouts. If you select all the existing Callouts and switch them into the Callout class with use at creation turned on, the existing Callouts don't reliably take on the class attributes. This may need to be