Definitely yank out that air line T fitting. When your truck leans over to one side, the outside bag acts like a bellows, as it gets compressed it squeezes air through the line to the other bag, instead of resisting the lean.
Having had several trucks with airbags for many years, I highly recommend the compressor setup.
It’s just a pain in the butt to have to find air when you need it. Even if you’ve got a compressor at home, you’re not always at home when you want to stiffen the truck. Being able to press the button and dial your pressure whenever and wherever you want is worth a few hundred bucks and I’m not made of money.
Some kits offer a cheaper compressor or a “heavy duty” compressor for a little more $$. It’s not much more, absolutely get the better one.
I don’t know if this is your first time hauling a camper; it can be alarming at first how much the front overhang moves. Trucks flex a lot, that’s why cabs and beds are separate.
One reason campers are good off-road RVs is because the truck can flex and the camper is free to ride in the bed and not get twisted and stressed. RVs are built like junk, they can’t take too much of that.
That’s why I don’t like those front overhang shock mounts. They mostly just stress the camper body as the truck tries to twist it up.
I’ve had a few ‘80s Chevy/GMC crewcab duallies and it really is amazing how well they handle a large heavy camper, completely stock. I never needed or even wanted to do anything to either of mine, they sat level and handled great. The ‘90s ones behave really well too.
I’m another who liked Rancho 9000s but found they wore out real fast. I won’t buy those again.
I’ll probably try Bilsteins on my Dodge.
As I understand it, Bilstein 4600 and 5100 are similar, 4600 for stock height and 5100 for lifted trucks.
