My BML is also in Sagittarius, 25 sag 28' 42" , or Sabian SAG 26.
I have no idea how to interpret my Sabian symbols, just started today, but the planet descriptions intrigue me: about scholars and arcane texts, which is me all over, but again, just a glance.
The site didn't give me BML's Sabian symbol, but I recently became aware of BML when an otherwise-ordinary synastry (with someone I've had a lifelong fascination with) went off like fireworks when I added BML and the South Node.
I'm an amateur, only recently returned to astrology, and I must say, the impact of that synastry hit me like a ton of bricks and finally got my attention, there may be something to all this after all!
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You've used a different Lilith than the one that is commonly used... and, the one that I put the most amount of faith into.
At astrodienst's website, when you cast a chart, go to the page, "Extended Chart Selection", and at the bottom of that page there is a drop down menu [which you have, obviously, already found], and at the top of that menu, among the first three choices, before "asteroids" there are listed three items. They are, in order, Part of Fortune, Vertex, and Lilith. That is the Lilith I recommend using.
When you do that you will find that its position is 25* Sag 32' 32".