I admire your tenacity with the do-overs.
I'll share an anecdote: one time I came back from vacation excited to finally put the stem structure (which I had remade several times) together only to find that nothing fit.
@#$%^&*(), everything was perfect before I left! What could have gone wrong? Well, it turns out I had thrown away the good parts and kept the bad ones. Fortunately, the good parts were safely in the garbage bin at my feet, so the day was saved.
A cautionary tale for you and our colleagues - throw NOTHING away
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