That thing from the Everton game I pasted into post #9 says that they monitor their inbox right up til kickoff time. So if you mail them with thread title 'Chelsea Duplicate' and include your fan number and (Chelsea?) seat in the email then they should be able to sort you out with a duplicate...
Sure, but the process will be near-identical shirley, seeing as how the desired outcome is the same ie to provide OP with a paper ticket they can pick up at the ground