Troy Grady taught me that I do two way pick slanting. I had no clue, after nearly 20 years of playing, that I did this technique.
I have never even HEARD of this technique.
I also did not know that fast scale runs, just straight up and down 3 notes per string patterns, was something a lot of people struggled with.
The two way pick slanting allows fast alternate picking and keeps you from having your pick get stuck in between any two strings. When we pick, we actually tend to have either an upward pick slant, or downward pick slant. (watch the video to see what that is)
So, if you are one of those people who struggle with playing fast scale runs with 3 notes per string, you may find this video helpful.
Now, the video is 30 minutes long, but it's very entertaining. If you want to skip ahead to the big revelation of two way pick slanting, where Troy Grady found this technique being implemented by Michael Angelo Batio in Speed Kills, it starts at about 12:30.
John Taylor - guitar and bass instructor for Mile High Shred.