March serp belt pulleys with factory brackets

I don't know anything about the March pulleys, but I spent the better part of 1.5 years chasing down what I thought was a pulley alignment problem, because my car would toss the belt on every pass. I used to go racing with a minimum of 4 extra belts on hand every race. A lot of times I would not lose the belt, it would just pop off and hang around the water pump...but other times it would get stuck between the balancer and the block and get fried. When I would get down to my last belt I would have to go home :banghead: (only happened once that I ran out of usable belts)...

Anyway....LONG story short, my issue was not all in the pulley alignment...I solved the issue by using a thicker/stiffer and wider belt than normal. I forget the exact size, but I went up from like 0.8cm to 1.1 or 1.2cm width. Problem solved.