I have a problem shearing one of the bolts in my low-mount alternator bracket. It's happened twice. First time the custom chrome socket head bolt that came with the kit broke in the block; EZ Out got it out and replaced with a regular grade 8 bolt. Now it has failed again, but fortunately left enough thread that I could grab it with vice grips & extract it. There is a bushing in the bracket that should help with the shear loads, but I have to keep the belt quite tight since it squeals if I let it get slightly loose. Any suggestions? Would stainless offer more shear strength?