94 SHO AC Bypass Pully EATS BELTS!!!

Hello i have a 1994 Taurus SHO ATX 3.2... When i bought the car it had been "eating" at the serpintine belt... After some investigating i discovered that the problem was that it had an AC Bypass Pully on it which wasn't doing its job... Here's what the problem is: (The pully is on a bracket that mounts to the engine) The pully doesn't line up with the rest of the pullys and tensioner like it should... It sits in towards the engine maybe 1/2 of an inch, which causes the belt to rub on the edge of the pully, thus "eating it"... It was in the shop when they foud that out so they thought the could maybe shimm it or space it out with washers... Of course being my luck that didn't work! So i had them put it back together and i drove it home. I went to the parts store and orderd another one thinking maybe this one just wasn't the right one, and well it does the same thing!!! I am getting very frustrfated and not too sure on what to do... I don't have the mouting brackets for an Ac compressor to buy a used one which i'm sure wouldn't be hard to get but anyway i'v spent $42 on that and was quoted $75 for a used compressor... Sorry for writing so much bit im trying to be detailed... I would appreciate any ideas/solutions you may have! Thank You!!! -Eric-

I had this type of problem on a Chevy once. I went to a scrap yard to get a part and found a bolt was used on the water pump instead of a stud with a nut welded on it. I think you know what type of stud I'm talking about.
Just a nut with a lock washer behind it is about the thickness you need.
You could try some lock washers as they should fit in the area your talking about. Otherwise a trip to a scrap yard like U-Pull-it is your best bet as its something missed by somebody else who worked on the engine.