Printing Pay Stubs emailed from My Assistant

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We recently started emailing employees their pay stubs using the My Assistant built in report for doing this task.  We added the option of making the files password protected.  It has gone smoothly except one flaw I have found...some PDF readers take the security requirement and disallow printing of the document while others do not (RE: one can print with Adobe Reader).  It seems the alternate PDF reading programs are assuming printing not allowed since the document probably does not specify printing is allowed or not.  Has anyone else noticed this and any better workarounds vs. having the users drop the attachment out of their email and then open with Adobe?

Thanks