I converted my old tab washer units to the type with the stub built onto the adjuster nut. It goes on first with the stub facing outwards. A warsher with perforations all the way around is set over that nut and one of the holes in the washer lines up with the stub, if not then flip over the warsher and possible an alignment will be gained. If not then loosen the nut just slightly. Repeat until one of the holes of the washer aligns with the stub of the nut, then, on goes the jamming nut and it is then torqued.
I usually leave the adjusting nut just very slightly loose, then, when the jam nut is torqued, it presses against the adjust nut and the adjust nut against the spindle threads and ever so sligntly takes up a very small amount of slack in the bearings.