There we go again , Don pretending he's not a top tier restoration architectGenerally all you’re doing with 600 is refining the 400 scratches so you’re not really removing a lot of material. I would not mess with 600 with a solid color single stage.
Insert mandatory backyard hack disclaimer here….
Don
I breathed a sigh of relief when Jim C agreed with meThere we go again , Don pretending he's not a top tier restoration architect