Are you adding more wood or just relying on the first loading of chips? I cooked a brisket in mine and ended up running around taking care of things for family for most of the day. I only added the first load of chips and had very little smoke flavor. The meat was cooked well, but suffered from my lack of attention and effort. I can't fault the smoker for my participation (See, Ron, I don't bash it when it isn't warranted.)
The best thing you can do with your smoker is practice. The more time you spend with it, the better the results will be. I also recommend getting it some more family members. Mixed families are great. Mine consists of electric, gas, charcoal and wood units in black, aluminum, green and well-faded. They all have their own personalities and it takes some effort to get to know each of them.
It also means they have to put up with me.