Are ya usin the chip pan that came with it? I never used that little box, get a 9X9 cheap metal cake pan, put yer chips er chunks in it, then cover that with aluminum foil, this heps keep the flare ups down (Yer not haven them yet, but could with the cake pan), heats faster an my chunks burn ta ash. That pan lasts fer a fair bit a time, It will smoke a bit heavy at the very beginin an slow right down ta tbs, after awhile, ya can pull the foil an shake the pan abit to hep the chuncks continue ta smoke.
Keep yer top vent wide open, ifin ya have the bottom vent's ya can adjust them ta hep with the temps, an keep the smoke movin.
Let us know ifin ya need any more hep.