"If it ain't Boeing, I ain't goin'"
Of course, 737s had their share of rudder issues too.
If I remember correctly, three 737's were lost due to pilots not being able to control the yaw of the plane due to rudder control issues.
I do know that before Boeing issued a fix by replacing the rudder actuating mechanism that Southwest Airlines specifically trained their pilots (who flew exclusively 737's) how to properly handle the plane in case of rudder problems.