Cool, thanks Endlessness. I followed your guide that you linked and it worked! Here's how it went:
I was able to scrape together and weigh 2.2g of jimjam fumaric goo, which I put in a fresh dish.

I weighed out 1.8g of sodium carbonate that I converted from baking soda. I added this to the goo and mixed with some dh2o to make a watery paste that I evapped with fans and light heat. I ended up with a brownish powder that I crushed up.


I then pulled 3x with ~25ml acetone. The first pull took a lot of the brown color with it and also some of the mass. The second and third pulls leeched more color from the sediment, but didn't seem to dissolve any more of it.
I combined these 3 pulls (~75ml) and added about 40ml of FASA. There was immediate white clouding throughout the solution, and I was pleased to let it sit overnight.

I decanted the acetone and let the dish dry under a fan for 12 hours. It was kinda sticky to scrape.

I crushed the crystals up to let them dry more, then weighed them to be ~1.2g, looking like dry, light-tan powder.

Thanks again for your help endlessness, was glad I forced myself to do this; I learned some good stuff. It also made me doubt the efficacy of the d-limo tek. If I wanted to achieve a near-pure product it seems an a/b with naphtha would be the way to go, starting off with white freeze-precip'd crystals that you can then convert in a FASA.
While I was doing this I read a bunch of posts about the jimjam, and from what I gathered from your analysis' is that there aren't many more alkaloids that are pulled with d-limo than with naphtha. And it seems like a waste of time and resources to go through refining the fumarates from a d-limo.
What do you think endlessness? It seems the food-safety of the d-limo doesn't outweigh the purity of the naphtha. Especially if you're recrystallizing the end product anyway as a salt or evapping it over some changa.