I’m having an issue where the serpentine belt sits too far back on one of my pulleys. It cause the belt to slide off and shred while test running it. Motor was a 502 but over the winter had it built to a 540. Got the crossover pipe with pulley from Hardin marine. All the other accessory pulleys are in line perfectly. You can visibly see the crossover pulley sits a little to far forward and I can’t figure out why. I tried another pulley from Hardin but the first one I had is suppose to be the correct one for the accessories I have.