I don’t have pics but for 225°F target temp I cinch the top down a little more and the bottom symbol is on the Smoke dot that’s stamped into the metal.
I’ve found that if you over choke the bottom vent to too low, you’ll extinguish the coals. So I use the top vent for more fine tuning.
I also don’t run any wires or probes out of the top vent, but do run wires via the lip opening and rely on the gasket to create a good seal.
To me, the difference between cooking at 225°F vs 250°F is the same result but time saved at 250°F.
I’ll also use a water pan to keep temps low on LAS briskets and have held temps at 214°-240° with ease.