Dakars Leaning to Passenger side

I've had my dakars on since the beginning of the year and I started to notice that my passenger side leans a bit. I installed the "+" leaf pack on the driver side and the "-" side on the passenger side. I'm getting a rear bumper with dual swingouts (tire on passenger side) and I was wondering what would the best way to fix this lean be? I always hear about the driver side taco and I understand that it's because the driver side is heavier. It may not be big to some but it's kind of bugging me now

The only things i have on my passenger side (behind the rear seats) are an impact gun, 10lb c02 tank and a set of snow chains. Would these three items be heavy enough to be offsetting the gas tank to cause this lean? Does anyone ever run small spacers to level out the sides?

 

"Taco Lean" is a notorious affliction for all generations of Tacomas, how much lean are we talking about? Many lift kits come with a 1/4" spacer for the driver's side front suspension to make up for it...usually the lean is most prevalent from the front. But yeah, the weight of the driver plus the weight of the gas tank being on the same side takes its toll over time.

 

My truck is pretty even in the front. It's my rear passenger that's leaning.