I have an 08 ram 1500 quad, 5.7 4wd with 200k miles. I’mtrying to figure out how many blend door actuators there are, locations of them, and easiest way to replace them? I have a small leak at the heater core and I’m getting that sweet smell. Both in and out tubes are hot so the fluid is circulating. I’m only getting warm air not hot. On just defrost it takes about 20 minutes from startup to get warm air, on defrost and feet, driver side blows cold, passenger blows warm. On recirc it blows warm from dash and feet. I’m also getting a clicking noise which sounds like it’s coming from the center of my dash. Any help would be greatly appreciated.