Hi all. Last weekend I DACP+NXT wax my car because it has what looks like dried water spots (they are NOT water spots they just look kinda like small ones, I'm trying to describe what it looks like) all over the flat surfaces. I was told by a pro detailer that this was acid rain. Well I used the DACP + yelo pad and PC and worked till dry. These spots can only be seen in bright sunlight. Not visible in shade, car looks awsome if not in bright light. Anyway the DACP made a small improvement. I have never clayed because the surface is like glass. But I'm wondering if clay might be in order? Can anybody help this stuff is pizzing me off.