I stumbled across this site by accident, and haven't stopped reading yet. I started smoking meat a couple years ago. Have done chicken, country ribs, bacon wrapped pork fillets (oh yeah, those are awesome) and like to do jerky. I have a Grill Pro vertical propane. I am searching for info on how to better regulate temps. Have a hard time kepping it down under 200*. I have seen about the needle valve and also the thermostat/valve/pilot mod. I am looking for a good picture heavy tutorial on this setup. I'll keep searching. Thanks. Lots of great info here.