I'm planning to prime the interior parts as I go, and it seemed like I had settled on the P60G2 Sherwin Williams Primer, but it seems like it might not be manufactured anymore. It isn't listed on the Sherwin Williams website. Has anyone tried the other aerospace primers from SW? There are quite a few on their website. The first is the Chrome Hazard Free Epoxy Primer, but when I search the forums for this, I get no results. Thanks for any help.