Quattro trigger....help??!?!

[Airgun.Sniper]

I've tuned my Hatsan 85 sniper it's shooting good and I polished the internals. The trigger still needs some work.  I'm told that with the lightest trigger possible I can get better groups.  How do I set the Hatsan to a lighter first and second stage trigger?

Thanks

Jay

[blackfocal]

http://www.airgundepot.com/understanding-the-quattro-trigger-adjustments-article.html