Problem with Sprayer

Hello,

I am using a Titan 440i sprayer for an interior project. In operating the sprayer, I am getting a poor spray patter. The paint is being applied normally within the interior of the spray pattern, however the outer edges of the pattern are thicker and cause streaks. I am back-rolling, however it is causing me to go back and re-spray some areas for a cleaner look. I have tried two different spray tips (419 and 317) and have seen the same patter from both. The paint I am using is Sherwin Williams Superpaint, Flat sheen, and Latex base. If anyone has any ideas on how to correct the problem, I would greatly appreciate it!