Taco Lean on both sides?

For reference, I am on new stock suspension (fronts replaced a year ago, rear shocks replaced a few months ago + TSB 4leaf last year). I'm in the process of buying small spacers to level out the truck. From my measurements last night I appear to have a lean on the front drivers side (as expected) as well as the rear passenger side.

I recently had my frame replaced so I am unsure if that plays into things.

Measurements:

• FD: 20 1/2"
• FP: 21 1/8"
  
  
• RD: 22 1/2"
• RP: 21 3/4"

I want to install a 1/4" to correct the Drivers Side front lean, but I'm not sure where the rear passenger side lean comes from. Has anyone had this?

 

I imagine fixing the front will take out the lean in back.

 

@cruxofthebisquit I'm hoping by adding the spacer on the front drivers side, it will correct rear passenger side lean.

I just wanted to see if others have ran into the issue. From everything I've read, most seem to have the lean on the front and rear drivers side, and not the passenger side.

 

Mine leans passenger. Springs are not a perfect science I guess.
It doesn't bug me.

 

maybe they installed the leafs on the wrong sides

 

checked and rechecked. Was covered pretty well in a thread long ago.

 

Are they marked so that I could check?