One of the ideas behind this basic recipe is to show that you can cook ribs without worrying about cooker temperature. In fact, it says at the beginning:
This easy method requires only one adjustment to the vent settings at the beginning of the cooking session. We'll use water in the water pan to keep the cooker temperature under control. This allows us focus on the tenderness of the ribs, not the temperature of the cooker.
So you should not be looking at the lid thermometer when using this recipe! Bad boy, Travis! And you don't need a probe on the grate, either.
Light the cooker as described. Adjust the vents as described. Cook for the specified length of time, then start testing for doneness. When the ribs are done, they're done.
How did they turn out, Travis?
Regards,
Chris