Invest in the rose jointed offering, once your hands have stopped bleeding & A&E have discharged you they are straight forward to adjust, retaining their setting ad infinitum.
Having just said that I had a look in everybody’s favourite rubbish bin (eBay) & couldn’t find a reference, someone will know & clue you in; it’s a long time since I fitted mine.
Invest in the rose jointed offering, once your hands have stopped bleeding & A&E have discharged you they are straight forward to adjust, retaining their setting ad infinitum.
Having just said that I had a look in everybody’s favourite rubbish bin (eBay) & couldn’t find a reference, someone will know & clue you in; it’s a long time since I fitted mine.