It's always hard for me, to make the relay between my mechanic (he's the one working on the car), and heartbeat or you guys. What my mechanic says, he says that all the pulley are very well aligned, but he can't screw this bracket properly. He says from his experience, that the bracket sent by heartbeat is a repro, the way it's built and welded, even the replacement one they send me.
I'll try to get a picture from him, to see exactly where's the issue.