The first thing I did when I got fade was to talk with my instructor about my braking technique and he said that he didn't think it was the issue. We switched from the street/track pad to the HT-10s and everything worked fine. He was surprised to see the picture of the pad separation, and confirmed again that he doubted technique was to blame. I'm doing all the braking as late and quickly as possible, rarely holding the brakes except for turns that require trail braking.
VIR has some really intensive braking sections, especially on turns 1, 4, and 14. At 1 you are braking from around 130 down to about 60 or so. Here's a video of one of my laps to get an idea:
Again, I'm open to any constructive criticism so if anyone does something in my technique that is to blame, berate me.
p.s- I might have engaged ABS in that video, but that rarely happens (maybe once or twice during a weekend when really pushing myself)