Originally Posted by Sizzl
You may have to use a diffuser or water bowl as a last resort
Mine would see-saw the temp before I started using a 16" clay pot diffuser. It really evened the temps out. I made a rack for it to set on between the coals and the bottom grate.
Performer, UDS, 1983 WSM, Frank-in-Weber, 120 Gallon Offset, IQ-110, ET-732