Has anyone tried using litespan? The sheet I have seems to have a clear plastic layer over it, is this part of it ,or do I remove it before applying? It seems almost to want to delaminate on its own before I even get to the laying stage and will seperate very easily.The piece I have layed with it on just wrinkles terribly, without any sign of shrinking, when I apply heat to it with either a sealing iron or a heat gun. I have read the instructions thoroughly and cant find mention of a removable layer. I may just have the temperature wrong, but I think its about right. Any advice would be helpfull!