I've got a couple of Garritan Personal Orchestra Kontakt player questions...

1) I seem to be having problems with the tuning of the instruments that play back via my Kontakt player. Everything on the player is set at 0.0, which I would imagine is tuned to 440, yet all notes played back seem a little under pitch. What can I do? What should I try?

2) I also have been having problems with Midi notes getting stuck. How can I effectively resolve this?

Thanks so much!