I know it's been a couple of years but can you still get hold of these double tens?
Hey johnnie...not sure of it's bad form to redirect to a different drum forum but I posted a "hack" to the Premier Royal Ace snare wire issue here...
http://www.drumforum.org/index.php?/topic/134462-premier-royal-ace-owners-dont-despair/
Maybe you are looking to keep one original but if you are just looking for a solution this worked out great for me. Let me know if you have any questions.