First, I'd call Cookshack and get the smoker working properly. You need to know that to understand what's really happening.
If your ribs are too mushy and fall off the bone, then they are overcooking. What temp are you cooking and what type of ribs? At 235*, loin backs should be tested for doneness at apprx 3.5+ hrs and St. Louis style at apprx 4.5+ hrs. Test by running a toothpick between the bones in several spots on each rack. If the toothpick slides through the meat like butter, the ribs are ready. If not, cook for 20 more minutes and recheck. If still too mushy for you, you can always dump some moisture by opening the door for a few seconds along the way.
Oversmoking is not a problem. Try using less wood. Also, type of wood has an impact. Mesquite has a heavier flavor, Hickory medium, fruitwoods lighter.
This flavor chart may help.
I have the "Elite" (smaller version of the Amerique) and love the ribs we smoke in it. Having a good working smoker and an adjustment or 2, should have you turning out great ribs in no time from your Amerique.