Replacement of patio door roller assembly

Hi, My sliding patio door stopped closing properly. I replaced the roller assembly on both sides of the door even though the rollers seemed to be fine. However, the door is still misaligned. What is my next step?
Here is the part description: 13180 - Roller Assembly, 1-5/16", Plastic, Concave, Non-Adjustable

Thanks for the reply. I cleaned and checked the track and the door itself when I installed the new rollers. Nothing looked out of ordinary. My wife told me to think about it and she was sure something would appear to me. Nothing did. However, four days later, after a bit of cold weather, the door slides perfectly! No idea why, but happy. Thanks again.