PS eating up mah belt WTF!!!!!

I posted a while back about my belt being ate up somehow. Well, I was eyeing the pully aligment and it appears that the ps pump is leaning upwards. I recently replaced the pump so you all know that the pully has to be pressed off to get to the three bolts that are holding on the pump. I have check the bolts and the bracket for alignment and tightness. How is it possible for the whole assembly to lean upward. I don't get it. Anyone have a clues as to the fix for this prob.
 
I haven't looked closely at the one on my stang lately but most of these pumps cover a wide range of cars for the manufacturer. It might be possible that one or two standoffs are longer or shorter on the pump you got than the stock one and to make it fit you need spacers or just they got mixed up and put the wrong pump in the box when they rebuilt them. Anyway I think on the Mustangs the three standoffs by the bolt holes should all be the same length but I know I've used spacers on a
Chevy before.