The clearance spec is how deep the flexplate tooth extends into the starter motor pinion. The minimum needs to be 0.040 inch. When the clearance is too limited, a shim will strengthen this clearance. As you mentioned, a shim didn't aid so we will think the clearance is abnormal—which We'll https://archeravnex.thelateblog.com/35716226/examine-this-report-on-starter-parts