Have you looked at very close range those cars that you have sanded after a couple of months, say 3-6 months? You really has to look very closely to notice very tiny orange peel on the paint. It should be more easy to spot those on black surface. It may be tiny that some may not even notice at all.
I was wondering if any of you do notice this on OEM clear or custom painted surface.
Well, if you say that it was not sanded properly for the first time. How about sanding it a second time? The surface was totally mirror like when the vehicle was rolled out but within months, i term it as "mini orange peel" re-surface again. This is something i dun quite understand therefore seeking if any experience detailer does notice this phenomenon. I would say the wet sanding process was done correctly.