Great to hear that you just about have all of the serious issues handled ! The type of gear lube may help to some point, but the airhead bikes have a 'clunky' shifting transmission, about the only thing after that, that will help shifting, is experience. I have to admire your persistence in this hot weather, as I have just about given up on working on my R65 for now, as it's 95 F. on average in the garage at 5 am, so even getting up early isn't much help at this time of year !