Not easy to pick up thread on these jobs because after years of abuse the threaded ends of these MGB columns are almost never true. Chuck it in my lathe and they wobble too much to be able to recut the threads with a single point tool. The threaded end of the shaft gets bent by people using a hammer beating on the end of the shaft to remove the steering wheel from it's splined shaft and tapered seat. Hence the need of a dienut to clean damaged threads.