[[30-17]] Antes de hacerse Chaviri, 'before Chaviri became.' Note that Chaviri is the subject of hacerse.
[[30-20]] al ir á, 'when about to' (lit., 'upon going to').
[[30-21]] se le adelantó alguno, 'some one got ahead of him.'
[[30-22]] por él concebidas=concebidas por él.
[[30-23]] Lo que no... nunca, 'what he never fully understood.']
[[30-24]] chascos is the subject of producían.
[[30-25]] cómo á... no les había pasado lo mismo, 'why the same thing had not happened to....'
31.—[[31-1]] al establecerse, 'when they went into business.'
[[31-3]] Anduvo, 'he was' (lit., 'he went'.
[[31-11]] se, 'to themselves,' or 'to one another.'—al verle, 'upon seeing him.' Note again this common use of al with the infinitive.