Quotes - Printing to PDF - missing images

Quotes - Printing to PDF - missing images

I'm customizing our Quote template.  I have it how I want it in the customization, and the preview looks great.  but when I go to an actual quote and print it to pdf, the images are all missing.  Am I doing something wrong?

I have attached a screenshot to see what it looks like.

Any help would be greatly appreciated.

thanks!