I just purchased a 120" screen, and it has waves that tend to bend towards the center. It's incredibly distracting. I bought it online, very cheap, in a small Korean town where I live. It was hard enough just to get it, so if there's a way I can fix the waves without returning it or complaining to these people who only speak Korean and not English, it would save me a lot of time and trouble. Also, being in this town, I do not have the traditional tools available in shopping malls, like steamers, or the special fabrics for screen that could be purchased at craft or hardware stores.
With that sad, is there any DIY fix for getting waves out of the screen? It's a manual pull down. I notice if a stretch it taught on either the left or right sides, it will straighten out. But what is the best method to keep it taught without making it immovable later? I'm thinking I can use double sided tape to stick it taught to the wall, and then cover the tape with plastic if it needs to be rolled up later? I'm sorry for all the noob questions and ideas. I'd appreciate any help, thanks!