Ohhh, I'm all too familiar with that bracket. Hahaha. I replaced mine because the hole in the bracket was so elongated that the ps pump ran off-center and eventually warped the bushing. I spent the better part of two hours cutting that stupid aluminum bracket off the car in pieces. They really should have put a steel insert in the aluminum. I think the bracket cost me $35, but it took a good three or four hours to get it off because of bimetallic corrosion and a lack of space to get a proper wrench on place.

I've got that nut cranked down hard, and another nut behind it to lock it in place. It's good advice, and thanks.