Soft Top Windows From what I've been told, there's no way to replicate the factory heat seal and trying to glue it in won't work because of the tension on the back window. You can't guarantee it will hold, let alone, leak. I've talked with Electron Tops, Doug Robbins of Robbins Tops and others. They all said the same thing. I was told the heat seal process was a 2-3 day process. So, I turn those repairs down and try to talk them into a new top (or at least a back window unit if it's a 2 piece top)