I'm sure it happened to some of you... I'd over tighten oil fill bolt in lower unit in my Yahaha 9.9. Now bolt is "skipping", that means thread is stripped.
How do you regenerate it with out rethreading it for bigger size ? Problem is that hole is recesed about 3/16 and diameter just big enough to accomodate head of bolt and washer. So I' don't want to use different oil fill bolt.