[sjabariiii]

I have been playing a 582 Antigua for a couple years now... I do have to push the mouthpiece on 3/4 of the way or more for it to play in tune. It was even worse at first, before I learned to hold my embouchure tight enough. Playing it more often helps. The stock mouthpiece was probably easier because it has a smaller opening (and smaller chamber) than the link. You might try a Link 7 or Bari .064 and a slightly harder reed. I use a morgan classical chamber with a 6 opening but that's a bit unusual.