I usually do the same, tailor the return to print the same for all copies.  I usually don't mask the SSN, but since I am emailing many returns to clients (through an encrypted email), everything you read says how the SSN and bank account info should be masked for protection.  I do agree with you though; if I mask numbers who's to say some of the numbers masked are incorrect.  How can the client correct me if they can't see the whole number?  I think I just solved my problem lol.  Thank you!