Ummm ... FUCK COMBUSTION! LOL!
Seriously mine lately has been getting charred. The grind is too fine. I used to get shake that was actual shake - broken bits. I could generally vape that pretty much as is, except for the occasional mini-bud. Lately they have taken to pre-grinding it to the consistency of tea fines, which is probably GREAT if you were using it for medibles and not so great if you were vaping it.
So now I have to grind regular bud and my grinder grinds it too fine. Both grinders I want to try are sold only from Canada, and they ship via postal service. I haven't been able to get mail for 4 or 5 years now so ... no new grinder for me.
If I lower the temp it doesn't seem to cook at all. Moving it back, same thing. Can't seem to dial it in for the finer grind from my Golden Gate Grinder.