Currie has a great workout plan for their employees! It may look old-school, but it’s actually extremely effective and requires a carefully calibrated swing to sneak up on the correct width. Backing the tube out is a whole lot harder. Keeping everything in place while the dead blow hammer does its work is an alignment bar that is centered off bushings pressed into the carrier bearing location in a mock-up third member and in the axle bearings. Once satisfied with the measurements, the tubes are tacked into place.