VX4EJR, yes, they went right over it after cleaning. I did have a problem with one and ended up tearing it, so I have 3 with, and one with out. But I bought another T-shirt and Kevin threw one in for free. I think, no, I would recommend that you wipe it down with a wax remover too just to be safe. I had a edge that just would not stick no matter how hard I tried, and in the end I tried to hard and ruined it, oh well, live and learn and pass it on to others.