I just finished spray painting my 56 belair top with 3 coats of Limco Utherane Black(3 Coats) and when I look at it from the side I can see areas that look slightly rough compared to the rest(90%) of the top. Will that polish out or do I need addition coats. How long should I wait before polishing. OH yes I am 1st time painter. Thanks for any help Jerry.