My last batch of Changa was the first Id made and I am very pleased with the results.
I split my 7grm yield of jungle spice in half, 3.5 grm converted to freebase and initially added this to my leaf blend + 10 x cappi Ipa.
I got no effect from that mix so added all of the unconverted spice to a little more 10x cappi ipa then added this to the mix with a little more leaf blend and hey presto Ive had some stunning experiences with this and it was a very smooth blend and as I'm on a new batch I wondered if it was nessesary to do the fumarate conversion or could I just add the unconverted spice to the cappi Ipa it says in the blab tek that the convertion is a must to acheive a smokeable product but on adding the un-converted spice it was a winner I wondered if anyone else has had this type of experience?

Combustion of fumaric acid can generate maleic anhydride which is corrosive, irritant, etc. It might work to have effects but personally I wouldnt risk my health.

How many leaves were there in the changa for the 3.5g freebase? Just make a stronger changa to begin with, less herbs more dmt, and you should be fine

Thanks endlessness
I added the freebased 3.5 grm which was then around 5 grm after fridge precip, to around 15 grm of leaf, I will try a stronger ratio, I'd say this was around 4.5:1
I guess after adding the unconverted spice 3.5grm it was more like 1:1 which was to me was superb
thanks for the info again