Rather than looking for slight defects or swirls in the bright sun, I've found that looking under incandescent light showed more than met my eye in the sun.
I found success with similar problem by using Meg #2 with orange pad applied with setting on #6 speed. Follow with fine polish with white pad, then applied lsp.
I'm aware that not all sealers bond to all waxes. I'm considering using a product with fillers (like Megs #9) topped with Optimum Opti-seal. Will it work?