so i'm new to dry mounting and i've read a lot about doing it at home with an iron, etc. i bought a piece of mat and the tissue which was handed to me by the sales person at my university bookstore. the tissue is weird...two ply. one sheet is like wax paper and the other has spatters of tacky material. i've tried a lot of options but can't figure out any way to make it work. is this the wrong tissue, or am i just doing it wrong? any help would be great. thanks.