It might be a good time to adopt the habit of purging your model to reduce it’s size.
Window>Model>Statistics Purge Unused.
Your model went from 1.4 mb to 168kb on my machine.
Shep
Yes it’s supposed to be a bit under 3" at its base
What does purging do?
It removed extra information from your model, making it a smaller file, without unneeded or redundant data.