I just put 2 coats of UPP after using AIO and my black car looked great. Then i went over the hood with Natty blue and it looked terrible, you could see all fine scratches and everything. It seemed the UPP filled the fine scratches in but when i put Natty blue it made everything really noticable. What am i doing wrong, is this a good combo? Will i notice a big difference if i use natty blue over UPP?