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My first thought is that the new shifter isn't compatible with the chainring spacing, but unless this group has a super-narrow profile I can't think of one that would be as wide as a typical first-to-third chainring spacing. In my experience, the markings on twist-type shifters are not always equidistant, and may be due to non-linear throw of the derailleur ...


1

The brake pads on this kind of brake (V-brake) are adjusted with the screw above the one you've circled. The screw at the end of the pad adjust the positioning of the pad relative to the rim. It's one of the jobs where you ideally need 4 to 6 hands to get it right. The screw that you circled adjusts the symmetry of the pull, or the timing of the pads ...


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