Yeah, I did some digging when it all happened and it seemed he'd been doing it a fair bit! I take it you read this thread? http://www.staffordforum.com/xf/index.php?threads/the-living-room-pka-chambers.18402/
http://www.staffordforum.com/xf/index.php?threads/the-living-room-pka-chambers.18402/