It's just errors with OCR and proper scaling, as I can guess from the screenshots. It also depends on in what software to work with pdf's you're opening this before sending to print. Try to upload them to this thing actually created for filling ds11 forms I think it will display them correctly, or show where is the issue to fix if there's so. It's a paid one and has the uptime as low when the file is more then 50 mb size, speaking from experience, but it should work nevertheless
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