Hello just brakes not brifters? the bolt is behind the lever. open the QR on the brake and pull the lever and look inside you'll see it. on Ergo shifters it is on the outside of the lever but up higher on the 'hood' and hidden. it doesn't have a groove in plain sight like shimano
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk