Manual photo placement contact sheet

Using iPhoto, I am trying to print a contact sheet with the photos in a specific order.

I have them in an album and I arranged them as I want them printed. Upon printing to PDF, the images scramble.

I have tried, but without success, the following:

Tried setting the sort to "manual"

Tried "batch changing" the dates and re-dated them sequentially by one minute and then clicked "sort by date".

Tried changing the file name and clicked "sort by file name".

Have spent hours trying to fix this. At my wits end!

My goal is to print 5 contact sheets with comparable photos in identical locations. Specifically, each contact sheet depicts a house on the market. There are 5 houses = 5 contact sheets. The upper left corner picture on every contact sheet is the house's front exterior. The upper right picture is that house's kitchen and so on....so that we can lay out all the printed contact sheets and compare quickly.

Any ideas?

Thanks,

Banana