I do have a tuning page for the AK saved as one of my favorites,,,, I will find it and post it for ya. As for the QF-2 kit,,,, I know Archer Airguns sells them,,, as well as some aftermarket parts/accessories for the AK....
Swapping the stock spring with the QF-2 spring will boost up your FPS and give it more "oomph" :)
Jeff