Thanks for the reply.
Yes it is a North Star, and it's good to hear the mantle is more durable.
I've actually never tried the old hairspray trick with my gas light mantles, but if it does work, I don't fancy trying it on the Coleman.
Spraying it before fitting may tear it when clipping on and pulling the bottom down, and spraying it after fitting will eventually load up the element.
Does the Hairspray treatment even work anyway?