Thanks Stroker. We lent our Santucci book out so I don't have those picture references with me. The things I said earlier in the thread about the book were from memory. I'll have to check again when I look at it. I do remember a picture they had all of the gears lined up in what seemed like weakest to strongest. In that picture the 20° was first, then the 14°, then the straight cut. That's why I figured the 20° was the weakest.
