I am having trouble getting a smooth top coat of paint on my walls. The walls are drywall and the first 2 coats went on great. I needed to do a 3rd due to incomplete coverage. I painted a deep red over a light cream color. I used a roller and after the 3rd coat you could see several areas where I had been with the roller. My thought is that the paint dried so quickly that is why I have the roller marks. I tried doing touch ups, but then I created more brush marks around the edges of the area. I did get smooth coverage over the roller marks. Any suggestions?