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this chain's not too short? the chain that originally came with the bike was 120 links, but the new replacement chain I got in the store only has 116 links. it seems most chains longer than 116 are intended for electric bikes, so this confuses me a bit as mine's not an electric bike, and the previous chain didn't have those big pins found in electric bike chains
also: the rear derailleur now doesn't want to shift to the smallest few sprockets unless I move it with my hand. I tried to spray a lubricating oil into the eight derailleur joints, but that did nothing. how to fix this?