Adjusting gas/Air Mixture
After searching this forum I feel lucky my problem is small compared to many. When the water heater lights, the exhaust has some amount of carbon in it, enough to create a trail up the side a few inches after a while. I have tried adjusting the air mix portion of the tube going in but since I am not sure how or what direction to move it, I thought it would be wise to seek the wisdom of the many more experienced people here. How do I adjust the mixture?