I am having terrible trouble trying to get an english horn solo line to sound legato. I set the sustain / sostenuto pedal mode to the second one, and have played about with the polyphony control, all to no avail. There is a marking in the event list (I'm using Sonar) to put pedal on, but not much seems to happen. If the polyphony is set to 1, I get the right sound, but no legato - especially on note changes of more than a semitone. If it is set any higher, it sounds like the instrument is being overblown with harmonics sounding an octave higher, and the instrument sounding corse and really nasty. But it plays legato.
Am I doing something obviously wrong, or is my computer going crazy? I'm aware similar questions are in the archive, but couldn't find one relating to my problem.