Took my MP3 to the track a couple weeks ago and had no problems with the pullies. This time I had the complete set including the v2 crank and v2 PS. I will attest to the power gain as I easily saw a decrease of .3-.5 seconds ET. My mile per hour was higher and compared to times I've had in the past, even being slower out of the hole, I made it up and more by the end of the 1/4.
All durability and fitment issues appear to be taken care of, so no one should have concerns of failure from here on out. Just a little message for those of you waiting for that reason.