http://www.guitartricks.com/2000/trick.php?trick_id=6032
Another good exercise is to hammer on 1st finger, then 2nd etc keeping them all in place as you go and work from low to high strings. It's natural to loose volume as you go higher.
Pinky/3rd independence = arse! Chopin hated his little finger and he was one of the most crucial pianists of all time. My little finger flies off sometimes but I'm not too worried 'cause I'm still damn fast.
If I couldn't laugh at myself how could I laugh at someone less ridiculous?