Abstract: A system for providing improved warp uniformity across the width of the machine, the system including an expansion/contraction comb assembly connected to a synchronized timing system for providing a multiplicity of different expansion zones based upon different threaded zones on the drive rod that become sequentially decreasingly dense from the center of the machine outward. Also the system provides for elimination of floater blocks, which are replaced by drive blocks for deflection control across the width of the machine.