this whole method is fiddly and impractical. In fact, useless. I am not trying to fix 'one note', but one note for a chord that is being played dozens of times. What a waste of time. I'll just kill the whole track
It is and that's why so many people still use MIDI and plug-ins.
RTs give a quick and very good cut, but one's rather restricted in what one can do with them.
MIDI allows much more control and tuning.
I think the tricky bit is getting the right balance between those two enemies.