I also haven't found the need to stir. Some variables that I've narrowed down for myself: Well ground herb. Don't crazy and grind it into dust. But do grind it. Dry herb. I usually grind a couple days worth and leave it in my 4pc grinder which helps it to dry out a bit more. I load what I need and store the grinder in it's own mason jar. Lightly packed stem I draw in to fill the stem and very gently tamp with my finger once or twice My own quirk: I usually do my first two draws with the solo upside down. This (in my mind) helps keep the herb in the stem for the remainder of the session right side up. Very seldom do I get any bits resting in the oven. Variable draw length Longer length draws (8-10 seconds) towards the end of the session will tend to reach the screen. I've had time to enjoy the tasty flavor by this point and am just extracting the remaining cannabinoids before I shut er down. Variable draw speed Faster draw speed will create hotter herb provided your not outpacing the oven. Experiment to find balance. I usually set the Solo on level 4 or 5. My first few draws are more like puffs (like on an old tobacco pipe or lighting a cigar) warming up the herb while exhaling through my nose capturing all the flavors and smells. Once I begin to get vapor from my nose I switch to short-ish draws of about five seconds and exhale through my mouth for the remainder of the session. I usually get about eight to ten vapor draws or so and two more long draws to finish off. Once the flavor gets near that sharper toasty taste I know it's time to finish up. I tend to take my time. I enjoy the whole process. It's a relaxation/night time/bed time thing for me and I've run up against the auto shutdown a couple times vaping a single load.