Taco Lean/ Fox 2.0 rear shocks?

Hey Guys,
Lately I notice that my truck as a lean to it. It leans more to the left than the right. Did some measurements and the right rear is 1/2” higher than the left and the right front is 1” higher than the left.
I measured my coil-overs and they’re both check out (2” from the collar to the top of the threads). I then removed the rear shocks and I noticed one is taller then the other. My old Rancho5000’s did the same thing but I didn’t notice the lean until recently.
I’ve heard about the Taco Lean before but never understood it. Can someone explain to my why my truck leans to the left?

 

Are you sure the rears are fully collapsed/extended when measuring them?

Taco lean is usually due to the weight of the gas tank, battery and driver being on the same side and causing lean over time. A small 1/4" spacer on the drivers side front coilover is usually used to compensate, or by using slightly more preload on that side.

 

Yes, They're fully extended but I spoke with a rep. at Fox and they said the taller shock goes on the passenger side (980-24-671) and the short goes on the driver side (980-24-672). He said the difference in length is due to the mounting location of my truck. I guess is kind of makes sense about the gas tank and drive being on the same side but why didn't Toyota compensate for that?
I'll be adjusting my coil overs to fix the issue.

 

You'd think it was lazy engineering, but in the TRD sports, there are actually different front springs that are driver and passenger side specific. I think it makes the truck travel straighter on crowned roads myself, but it could be Toyota just being weird.