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I hit a few nooks and crannies and tight curves while wetsanding that I didn't mean to. Nothing too out of the way but a buffing pad won't be able to reach them.

I need to buff the shine back, are there (say) dremel attachments that work especially well? I know there are some out there, but not sure which if any are good for automotive clear. Any recommended RPMs when using them?

On a small spot I usually sand it a little more with 3000 to 4000
grit then just buff it by hand with a shop towel.
It actually goes pretty quick if you sand it to a fine grit first
and use a heavy cut compound first.
The Aralon foam sanding discs work real good for this.