I switched to a dog bowl type attachment and attached the billows to that. This allowed for air to flow thru three ports on the dampener instead of just 1 hole. This seemed to do the trick for me and helped spread out the air flow that hits the coals. Also I found that I only need to open the...
I have a WSM 14 and recently got the Billows as well. I have similar trouble at times getting over 250 and tried different amounts of charcoal. I am still trying to find the right combination of lit coals to achieve the required temperatures. I have used a lava Rock temperature controllers...