You using the proper length pins?
There are differences to them, throught the model years.
The first thing that comes to mind, is that you might be using pins from the "C" body line of cars.
They are longer, because the rotors are 1.250 inches thick, on the C bodys, needing longer pins.
I would be telling you, to check the length of the pins.
My 2 cents, to your question.