I found a poster on Ebay. It's listed at 27X41. I see the same poster on other sites - they are all listed at 27X40. Is it possible for a poster to be issued at 2 different sizes? The film came out in 1985, around the time sizes changed. I want to check before purchasing. The gentleman said he will double check the size and let me know. If it ends up in fact being 27X41, should I still buy?