Greetings once again from the Great State of Arizona. I just added a Bar-B-Chef offset to the line up and was wondering about any good moifications that y'all might have done. It seems to hold tempature real well until 'bout the 4 hour mark then drops off and I have a hard time getting temps up. seems like too much ash in the fire box is preventing proper air flow or something. I did use the charcoal ring out of my WSM to keep coals from falling out the slide vent (design flaw). I'm sure using lump would reduce the ash but any other help would be great. Thanks.