Curious and thanks for raising it. I've been in the office quite bit since the LMS issue was published and no one has raised it before. The only difference and others is that this issue has a varnished cover, and as summised, it could be related to the heat from the shop lights. My working copy on my desk is fine and showing no curly tendencies. Even so, I will raise it with the production boys to see if they have an answer. I accept it might be a minor niggle, but the content more than makes up for it.