You can do this with one group only.
You can adjust the release time (or any parameter BTW) based on key-positions. Just open a new modulation source below the EG window and select extrenal sources>key position. If you slide the fader in the negative and let it control the release it will play the release sample longer when you play low notes and play it short when the notes are high.
This keyposition control is also perfect for filter scaling and panning issues.
calm down, I\'ve been doing a lot of Kontakt programming the last 3 weeks and I love every second of it, and so will you, your time will come...!
My only problem is the tiny user interface design. I need a magnifying glass sometimes to see what I\'m doing. In fact I have this dual VGA card that can magnify a section of the main screen on the second one for detailed editing...
I\'ll try that tomorrow.