I was thinking when the alternator bracket split here:
I welded it back up and moved the weak point to the tab thats bent where the tensioner bolt goes trough,overtime that tab started bending inwards and in the end I think thats what snapped the bolt becasue of the angle the bolt was working with:
so my solution for now is a 3mm reniforcement plate on that tab to help spread the load,will see it that stops breaking it lol.