axle wrap?

i have a block lift in the rear. everytime im driving and i stop at a red light, more so when i quickly stop, and i go to take off again it feels like the rear end shifts or pops. that instance after i let off the brake and then press the gas it has a noticeable movement. it that axle wrap. it is normal or what should i do to fix it. my truck has 9000 miles on it, and i just started to notice it.

 

Usually when using blocks to lift the rear of the truck the blocks cause the leafs springs to flatten out more..I would suggest replacing the block with an AAL or a whole new leaf pack.

Edit: by the way i'm that guy with the white tacoma you saw driving stupid in the whataburger parking lot Nice truck!!

 

I am experiencing axle wrap too but my AAL's are in the mail on their way... I can't wait....