• News of 105 going Di2 and disc only comes at a time when I am at the end of my tether with both.

    First the piston seal in my shifter failed out of warranty and now the bike shop tells me there’s a component draining the battery but E-tube doesn’t specify which component.

    Is there a way of sorting this without plugging a different FD and RD in sequentially? I don’t suppose it will be a shifter problem and seems unlikely a cable could drain the battery.

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