Here is a pic of mine flexing. This is from before I added all 8 JKS control arms, so it actually flexes a little better now, but I don't have any recent flex shots.
Yeah... I got some ****ing work to do here. Needs less shock in the front and less leaf in the rear. Need to scrounge up the money to get the other trans in, then I'll move on to getting the suspension working like it should.
Front shocks are limiting up travel, and the rear stops as soon as it hits the overload leaves. Just afraid to pull the overloads and end up with a bunch of wheel hop.
Oh, and that's not frame twist, bed is lifted, cab isn't.