The clearance spec is how deep the flexplate tooth extends into the starter motor pinion. The minimal should be 0.040 inch. If the clearance is too tight, a shim will strengthen this clearance. When you talked about, a shim didn't assistance so We'll presume the clearance is extreme—which We'll presume https://alternator-parts79124.angelinsblog.com/34332135/a-review-of-alternator-parts