Kyle,

I don't know if you sanded between the three coats of filler or not, and I have not ever used Koverall, but have used Silk and Dope using the same method you have described.

Without sanding between coats the silk was impossible to fill. With a light sanding between coats the weave filled with three to four coats and the finish was lighter also. I used #400 wet and very light pressure.

I would have to beleave thar Koverall would fill very much like silk. Boy does this bring back memories I never liked the smell of dope so have not used it since MonoKote came out in about 1959-60.