That is a beauty. To explore that 1/2 step thing, I suggest the following: when you are in the "wrong" gear, look to shift the front first and if it is already where you wanted to go, then shift the rear and if it is too much leave it there and then shift the front. It really is a neat set up.
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I don't do: disks, tubeless, e-shifting, or bead head nymphs. But I do hate all e-bikes.