As you might have already guessed, this is my first time tying poppers. My question is: I am using the WASPI foam cylinders and pencil bodies to tie up these flies, so do they have to have any kind of sealant on them to keep the water from absorbing into the bodies? Or are these fine just as they are? I am using the pre ordered colors I want so I am not painting any of them and am using glued on eyes. I have tied up two types, flat face popper and sliders.