Open the fan gate 100% and close down the lid vent to barely a crack.
Which 22" WSM do you have? The Gen1 charcoal grate sits very low to the bottom vents and you really need to do the mod to raise it above the vents.
Gen2 (arched opening in center section) alleviated the mod so it should be no problem, BUT packing a full ring of BBK and waiting until the pit got to 200* then putting meat on with a top vent wide open is taking it to task.
I also have seen that some 10cfm fans on some Guru's are actually rated less than stated.
Brian - Left Hand Smoke BBQ PNWBA 2010 Team of the Year
BGE's/WSM's/Pellet Pro WSM/BWS Gater/BDS Clones/Cookshack 008/Weber Performer w EZ-Que/Cajun Bandit/Rib-O-Lator Test Pilot/La Caja China/BBQ Guru/Weber 1000 RK Drum Coffee Roaster
Follow Left Hand Smoke on Facebook!http://www.facebook.com/pages/Left-H...462391?sk=wall
KCBS CBJ/PNWBA CBJ www.pnwba.com