I have never blown a belt either, I still have my original belt on my sled, bought the sled new in 99 and now have over 7400 miles on it, and have never pulled a stud through the track either and we have done a lot a drag racing with my buddies.
That's nuts!!!!......guess what your belt is about to blow...lol... Blowing belts is NOT a good thing for your engine change it.