Yup this just about freakin drove me nuts. I am way to OCD to let this lean slide.
Running coilovers I had the ability to jack up one side with the preload rings and to take out the preload from the other side.
Well guess what, no matter how much I would preload the passenger side the lean was still there and the vehicle would just get more lift. Okay shit now what?
I pulled the coilovers, swapped them side to side, changed out to heavier springs, and about a hundred other things to try to fix it.
I was only off about 3/4 of an inch. But I could see it. My garage floor is very flat side to side. Shot it in with a transit so I knew for sure.
Our good buddy Overlander came up with the answer. (Dont laugh it works) Change the length of your sway bar end links to account for the lean. It works like a charm. My rig sits flat as can be now.
Oh and believe it or not the fuel tank had absolutely NO bearing on the lean. I thought the same thing at first. Empty, full did not matter. So do the math. Unleaded gas weighs in at 6.183 pounds per gallon. 19 gallons gives you 117.477 pounds.
I weigh 230 and can stand on my rock rail and jump up and down and the rig barely notices it. I had my wife (who weighs slightly more than 118 HA) sit in the drivers seat and the lean was still there.
Believe me when I tell you this drove me nuts. I thought it was something I had done wrong on the Double D Pro install.