• Cool thanks @danstuff . I have to admit I've been a bit busy recently so project has been on hold... I've also misplaced my prototypes ! But will let you know if it gets sorted , I've just bought an 8 speed groupset myself so will try and get some testing done if I'm brave enough to open the shifters !

  • ...if I'm brave enough to open the shifters !

    If memory serves, the central screw is a left-hand thread... sometimes.

    I'm sure it's marked in some way, possibly with something obvious like "L".

    I'll UTFS, as I got this info on here when I was stumped.

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