I have been covering with polyspan for years and never had his happen. I made sure the slick/shiney side was up when I covered the wing. I filled it with dope and filled it as always. Did not have any fuzzies at all. When I have the covering filled adequately with dope, I put it on the paint stand and sprayed on a light coat of Klass Kote white and had fuzzies appearing everywhere. I think my only solution at this point is when the paint is dry, to wet sand with a fine grit paper. I have never had to do this so my question is what grit should I use to wet sand, 1000, 1500, 2000???
Thanks
Mike