3000lb tongue weight?? Are we talking about a fifth wheel? Most class IV hitches are rated at 1000lb tongue weight.
Do you know the total gross weight of your trailer?
Yeah, I was curious about that figure. Man, a 3000 pound tongue weight on a rear hitch style setup would be crazy...wouldn't it? The Pace site looks like his Shadow 28 may be a rear hitch/bumper enclosed model. It has a GVWR of 10,000 pounds. It looks like it comes with a 2000 pound tongue jack, so hopefully the tongue weight never approaches 3000 pounds. I don't know...depending on how he's loading that trailer, I wonder if the 1500 Express is the right pickup for this?...coil springs or not.
Thats my bad, typing in a dark room without a lit keyboard. 3000 was supposed to be 1000.
OP, I have ALOT (I do mean alot) of experience towing and hauling heavy loads. Having been in the army, and on 3 combat tours, for the better part of a decade now, I have seen and driven just about everything there is to drive, from tanks, to Route Clearance Vehicles, to pickup trucks. Some are VERY heavy, and some are bone stock trucks guys like you and me drive everyday.
Towing this trailer, you have already noticed something profound almost as soon as you set your trailer on your hitch. Your truck went from raked (the front end lower than the rear), to squatting. Your coil springs collapsed under the weight, and while that does not pose a problem to your truck immediately, it can, over time. Towing a load as heavy as this with the 4th gen Ram requires some additional help, due to the smooth riding coil spring Multi-Link rear suspension. Coils were put in the ram because they ride smoother, but they are your worst enemy when towing/hauling heavy. Thats where the good folks at Total Load Control Suspensions come in. TLC John will not only hook you up with great customer service, but Ramforumz members even get discounted pricing on their kits. This system is designed and patented specifically for 2009+ Ram 1500's. It will work in conjuction with your coil springs to improve load handling, reduce wear and tear on your coil springs, and even helps with unladen ride comfort and stability.
Shoot TLC John, or myself a message, and we can get you on your way to comfortable and safe towing. Happy Travels!