Longer shocks will only make the camber worse. Shorter shocks is lower the bike, thus "pushing" the upper arm out and making the camber go positive.
Far as the first gen frame goes, the lower mounts are centered directly over the frame rail/tube. They don't stick out like the 2nd gen mounts do, so the arm will be set further in. With the arms set further in, they will pull the bottom of the wheel inward, thus correcting the camber issue. How much correction it will make, is yet to be seen. Geese, pm what all you had to do with those arms if you don't want to share it publically. I'm really curious to see if it would be easier then making arms.