Which parts of the walls are you finding don't match? The size? The texture?

One thing to doublecheck is to make sure that when you print, the "Fit to page" setting is unchecked. That will often cause pages to not match size properly.

The actual walls themseves are different sizes.the second and third floor ones are fine.

Hmm. I don't have my copy of CWU here at work, so I'll have to check that at home (and someone else may possibly check it before I get home this evening), but I know a variety of folks have put together complex towers before, and I haven't heard about that issue before.

If you can, take a quick look at the page sizes; are the pages themselves different size?

The actual page is in a larger format than the other 2 pages.When i am printing out the 3 pages i am loosing the format on one and it is printing out smaller than the others.

That sure sounds like a scaling issue. Definitely check that you don't have the "Scale to Fit" setting checked, or the "Page Scaling" is set to none, when you're printing the pages. When you do that, it will scale the page ... and if the pages aren't the size when you print, they'll all be scaled differently - not to mention, the model won't come out to match the right grid size.