Accurate tuttle fin head dimensions

[sauls]

I have purchased a tuttle fin the is not fitting exactly. I realize that I can use soap or other tactics to determine the areas that are not fitting perfectly. However, I also wanted to use a more empirical approach to determine how best to mod the fin to fit. The brass inserts may not be in the right location.

I also have a deep tuttle that I would like to modify to a regular tuttle and wanted to ensure that I get it right the first time. You know: measure twice, cut once.

I have searched the web for drawings with dimensions and found only one so far (here http://www.home.umk.pl/~skoter/jaws/...box_tuttle.gif). The trouble is that the width shown is wrong and so I'm forced to question the remaining dimensions.

Does anyone know where I can find a dimensioned drawing of a tuttle box and/or fin head?

S