Deciphering Voltaire Code (Sorry - but please help!)

Hi all,

Sorry to make another one of these posts. But I’ve been looking and can’t find on that details all the specs. The saddle I’m looking at purchasing says the following:

Stuttgart
0732 21
18 4AA
M/M 30
PRO A-10
B10 D10

I know it’s a 2021 18” saddle with the standard pro panels and a 4AA (very long and forward) flap. What I’m confused about is why there is a “30” after the M/M and what A-10, B10 and D10 mean. Any help would be much appreciated!!!

A, B, C, D refer to padding taken away or added to the panels. A is the section closest to the pommel (front of the saddle). D is closest to the cantle (back). So these are modified PRO panels with 10mm removed from A, 10mm added to B and D. Seems built for a high wither with lift in the front and back.

M/M refers to front and rear blocks. There are two (maybe 3??) sizes. I am guessing the 30 following is a customization to one of them.