The mass of all B control models was adjusted to 35 grams and the mass of all C control models was adjusted to 40 grams.
(The mass of all B control models; was adjusted; to 35 grams and the mass of all C control models) (The mass of all B control models; was adjusted; to 40 grams)
The mass of all B control models The mass of all B control models
was adjusted was adjusted
to 35 grams and the mass of all C control models
to 40 grams