Ok, tech question for you real tack gurus out there: If you have the white XW Wintec gullet insert, what would that "translate" to in Centimeters for tree measurements? For example: if a saddle says it is a Wide with a 32 CM tree would that be comparable to the white XW Wintec gullet? (OF course you can see right through my question, right? YES, I am ogling a verrry nice used saddle with those measurements and am trying to ascertain if that is equivalent or not!) THANKS!