The center stand on the early R65s, like your 1979 model, were designed with some weird geometry which Motorrad corrected a couple years later. The stands tended to be well past over-center and made them a hernia-inducing exercise.
My 1981 came with the notorious Civil War mini-ball on the boot step. Just terrible. Good ol' eBay provided a later, direct fit model center stand with a proper foot pad that made stand usage so much easier.
Those low profile NyLok nuts look suspiciously like the AN-series nuts stored in my aircraft hardware bins. Good choice. They ain't going anywhere.