I completely agree with S. Wallace. I've used Koverall many times and always applied it with dope. On the edges, I iron it down because it's a little stiff and won't smooth down well without the heat. Dope is thermoplastic and works well with an iron after it dries.

And yes, get about three coats of nitrate down on the fuse before applying the silkspan. If you skimp at this stage you can have wrinkles later with changes in the weather. So make sure you have a good nitrate dope base for the silkspan.

Jim