When you say on 3rd link, is that 2 loose or 3 links under load? You do not want less than 4 links under load as the bars can bind. At 4 links under load, an adjustment in the tilt becomes required. We had the reese dual cam on our old tt, it is a pain to dial in but once correct it is a great hitch.
The absolute best way to check your setup is to go weigh it at a catscale
. You will want to make 3 passes (usually $9-12 for first pass, $1-3 for each additional weigh in a 24 hr period). Do this with truck and trailer loaded, ready to camp with all passengers, pets, gear and a full tank of fuel. First weigh is just truck, no trailer. Front axle on scale pad 1, rear axle on scale pad 2. Second weigh is truck with tt no wdh. Truck as in first weigh, tt on scale pad 3. The difference in the truck Wright is your tongue weight. The difference in the total ticket weight is your trailer weight. Third weigh is truck with tt and wdh. Look at the truck weights, what happened to Your axle weights? The idea of a properly adjusted wdh is to bring the front axle as close to unloaded weight as possible without going heavier. You can adjust by wheel well measurements but I have found better results doing the weight method.
Also look at your scale weights to make sure you are within truck specs. The first weigh ticket will be used to do this. Subtract the total truck weight from the trucks gcwr to see your adjusted towing capacity. Subtract the total truck weight from the trucks gvwr to get your available payload. Your tongue weight has to be factored into your payload. Go back and look at your third weigh (with wdh). Is your truck under gvwr and are you under gcwr? Are you under max RAWR?
On edit- I see you are in hickory. There is a scale at the wilcohess in Conover (exit 133 of 40) and one at the country Mart in maiden (321 and startown rd)