starter problem

[Big Kev-O]

I am using a 96 c1500 starter from autozone, staggered bolt block & 168 tooth flywheel. I shimmed it using some of the "Help" shims that I bought when I purchased the starter. I used a number 2 paper clip to set the gap between the teeth. I had alot of issues until I figured out that the starter needed to be shimmed and the correct mounting bolts (GM part #12338064) need to be used. Engagement has been nice and smooth since.