Width for printing sequence diagram

[mikebk]

I have a sequence diagram I'm trying to print onto a plotter. I'm seeing a problem where EA seems to think the diagram is wider than the paper size and is leaving every second page blank.

I'm trying to use a 15" wide page with 1" margins. If I change the left and right margins to 0.5" L and 0" R, the diagram prints normally.

The diagram shows the page Border line to the right of everying in the diagram. I assume there's some invisible object that's forcing EA to think the document is actually wider than it really is.

Any ideas as to how to deal with this?

Thanks

Mike