Ok, the first smoke was 5 full racks of ribs with different rubs. the XL could have handled a couple more!! i used one pan of water, smoked for about 3 hrs cooked for about 6 hrs.... rotated racks half way through. what i did well.... 1. managed to keep temp between 230 - 250 ( maverick ET-732) 2. thin blue smoke ( cast iron skillet) looked like cigarette smoke what went wrong.... 1. bottom of spare ribs burned on bottom. 2. internal temp was about 155 when i pulled them. 3. dry in spots. Suggestions?