Originally Posted by sliding_billy
Sounds like everything is right. I agree about maybe too much wood.
not sure that's the problem...I use large chunks (more like small splits) all the time, and easily get TBS. I dump in my lit, and leave the body off for ~15 mins or so, then put it on, and leave all the vents open until I'm ~25° shy of target, then start closing them down (top always wide open).
Is your wood seasoned? Maybe your charcoal got wet?