I tried a charcoal basket for the first time today and I am three hours into my first load of lump charcoal andeverything is going well except for one problem. I can't seem to get the temperature down below the 300 - 350 degree range. I filled the basket with unlit charcoal and poured one chimney on top and closed my intake damper to about 1/4 of an inch, but the temperature was still too high. Any suggestions?