Stb extraction- final product wont crystalize

[roundeye1]

So ive done this process a few times and had end results always crystals this time around it wont crystalize its like goo kinda. And i usually use white camp fuel for my non polar solvent but the discontinued it where i live so i used coleman is that the issue

 

[ElectricCell]

Hey just found this on google, :Naphtha used in extractions is typically refined to a higher degree of purity compared to common camp fuels (like Coleman fuel), which may contain additives or impurities that could negatively affect the extraction process or the purity of the final product:
Hope that helps.
Nap you can order, and it's a very clean evaporation