Good, the blades are correct and installed properly.
A few tips and things to try:
--Lift the mowing height a notch or two, which will create more lift/airflow and help pull the grass up prior to being cut.
--Try and mow when you only need to cut 1-2" of grass.
--Mow when the grass is dry.
--If mulching, try bagging. Better airflow and overall cut quality improves when bagging.
--Clean the underside of the mower deck with a hose when the engine is cool. This will also improve airflow.
--Blades are cheap; might want to just buy a new set with a perfect factory edge to get maximum performance.
--Mow in a clockwise pattern, starting from the outside of the lawn and move to the center. This provides the best chance of getting all the grass cut on one pass (vs. up & down or -counter clockwise patterns).