First off, I'd try a more mild wood for ribs like any fruit wood.
Second, add more chips and try again.
Keep the lid closed and resist the urge to peek. You'll see a constant stream of smoke for maybe the first hour, but it's once the smoke turns from dirty white to a barely perceptable blue whisp that the smoke turns sweet and really adds great flavor.
Write down all the details and keep trying, changing one thing at a time. It can take a while to get things dialed in.
Good luck.