I painted my Cobra replica with PPG single stage black and sanded it down to 2500 in 3 steps (tried 3000 but didn't find any improvement with it) and polished it with the Norton Liquid Ice system. It looks great from a couple feet away but up very close I could still see a number of very fine sanding scratches and swirl marks even with the white pad. I picked up a bottle of Meguires machine glaze and tried it tonight with the white pad - both a 3 inch and a 8 inch. It looks a lot better overall and is probably going to give me a nice finish. Putting my eye right down on the surface I have to look pretty hard to find a faint sign of a sanding scratch anywhere. Although a glaze it is removing a little bit of paint as the pad does turn black slowly.
I also have tried both a rotary and an orbital polisher and I think the rotary polisher is working better. I can't explain it but my Groits orbital polisher almost appears to create an orange peel effect on what was a smooth surface before I tried it. Looks like I will stick with my electric and air rotary polishers.
Is this a good plan for trying to finish my polish work up on a dark color - the Meguires machine glaze polish? The Liquid Ice system was suppose to allow you to compound and polish the finish with one product but I had some doubts about that and it looks like they are being borne out - at least with a single stage dark color. I also have a finessing pad that is suppose to be a softer pad yet, than the current Norton white pad I'm using. I haven't tried it so it may offer some additional improvement.