My pulleys are aligned correctly and I've only put about 150 miles on the new motor. Banged off a couple real quick gears before I put it away a couple weeks ago and it was after that when I noticed the Quanta belt had flipped over. I was using a Moroso long arm bracket on the right side and that had it using a 44.5" Quanta belt and maybe stabbing two gears caused it to flex before it rolled over? It's the only thing I can think of but it destroyed that belt pretty quick.
I've tried just about every other brand I can find up here and sadly, very few make a true V belt now days including Gates, Dayco, Continental etc.
Hoping to find something better to try?