Visio Page Size Limits

[wwenk821]

My work uses Visio for machine layouts and they can sometimes get very large. I'm working on one now that seems to be reaching the limits of what Visio can display on a page. The width shows about 1,092.25 inches before cutting off images with that gray on the side. (I know this is huge but we like to keep things at a 1:1 scale. I already suggested shrinking to a smaller scale but that was shot down) See attached image for an example of the cut off.

I can set the printing range to fit fine so if I export as a .PDF everything is in range, but when I am actually working on the page I can't see past the gray and its making it difficult. Is there a setting to set the page size limits or am I just out of room for Visio's capabilities?