Bruce, what you have is solvent popping. The little white dot that you see after you wet sanded and polish is the wet sanding/polish residue. If you try to reclear over that, you will end up creating a fish eye if not properly cleaned. When this happens in my shop I tell my guys to sand it down completely to the base, blend the base and then reshoot the panel. To keep from getting solvent popping, take the temp of your booth (hopefully not your garage) and the temp of the surface of the car and get the appropriate reducer. With clear coat, always use a tack coat first. How you do this is a semi dry coat over the whole car and allow it to flash. The second coat will be a med wet coat. let it flash to a sticky but not stringy. Don't touch the wet paint but the paper to do this test. Third and so on coats will be the full wet, just remember the flash times.
