Try wetsanding with 1000, enough to remove the clear, and smooth out the paint, as you should have originally.
I, personally, would use 1500, but that would take much longer!
Goal is to get through the clear coats, TO the top color coat, and then smooth that out. Once that is smoothed, reapply the clear, as normal, wetsand the clear with 1500 or so, and you're good to go.
Ray