Yeah, same without e-locker. I don't think it is the tires because that would spin easier without affecting drivetrain. The fact that they are making the truck chatter proves that they are getting traction and wanting to go forward causing the drivetrain to flex and "wrap". I would think that the radius arms in front would stop the axle from "wrapping" but the back may be caused from light springs so it rides better? I dunno. Maybe some stiffer/progressive shocks are the key ?? I just don't want big ol ladder bars hanging down in the rear.