How did you make the 5%?
Are you printing direct from ID, or from a PDF, and if from the PDF, which application are you using? If direct from ID, what printer?
I used the swatches. I printed from ID
I'm not sure you really answered my question. Are you saying you used the tint slider in the Swatches panel?
What printer? Do you get better results if you export to PDF and print that from Acrobat? ID doesn't get along well with some printers.