Toytec ULK measurement issues???

I just put the Toytec ULK on my 2006 DCLB, I did not touch the coilovers since they were already together, I added the 2" AAL (DEAVER) to the rear as I did not have the TSB spring pack, just 3 leafs(2 long and 1 overload). I aired all the tires to the same psi, parked on level ground and measured from the ground up through the middle of the wheel to the bottom of the fender on all 4 tires. DF-35, DR-36, PF-35 1/4,PR- 36. After the lift was on I took it for a spin about 10-12 miles, came back and measured all four again, DF-38,DR-39 1/2,PF-38 1/8,PR-39. I did follow Toytec instructions as well as checked out CHRIS 4x4's write ups. I am now stumped or should it just be a settling issue. I posted this in the suspension threads too, just looking for possible answers?????

 

What's your question?

 

I guess my question is, "what would cause the driver side rear to be 39 1/2 inches and the passenger rear to be 39 inches. I am just overthinking this and I should wait a week or so and remeasure? any recommendations.