Some interesting stuff. I haven't been stirring at all (I don't know why, I do with my other vapes), so I might try smaller loads and a stir half way through, I think that might help efficiency.
Mike M, that's about as many draws I get out of a load, it just doesn't seem that many compared to how much you have to put in. Do you pack your oven really full? Someone on another forum told me they were getting around 12 large, thick clouds out of a load, which I have to say sounds almost impossible to me.
I'll experiment some more