Spacer Plate Question

[chris02rex]

Hey I recently converted my talon to awd. I know the spacer plate is different between the two but we just ground the hole open to fit the starter correctly. When we try to start the car it turns like a half of a revolution then locks the starter up. The motor spins freely by hand and I have tested the starter out and it was fine minus needed to be greased. When it turns over it is also making a grinding sound. My main question is what are the major differences in the plates that would cause this or is there something else? Thanks in advance