Just shot some blasted parts in Nason 2 part etch primer. A cheap way to go, but so far I'm pleased with the results. How long should I wait before I spray Evercoat Featherfill G2 on it? If I have clean parts painted in etch primer, do I have to scuff the paint before shooting Featherfill if it's days after shooting the etch? I'm just a fabricator trying not to fuck up a paint job. Thanks!