Outside the falling flat issue, small dinner rolls are great. When using the smoker, or grill, you must remember, when open a grill loose heat real fast. The spouse opens the smoker to check meat temp. Without removing the meat. She's standing there temp falling, like my investment portfolio. Oblivious to the fact.
Remember heat / temp recoup times and adjust accordingly. At full burn,375, it takes 15 min to get browned bottom bread. I use a cast iron griddle, placing the bread/ loaf pan on top of it to maximize cook time. Minimize burnt bread.