My RH indicator has a broken lug. I fixed it by making up a strip of thin aluminium drilling a hole at each end and used a piece of self adhesive foam under the strip to cushion it and to apply light pressure.
It has done about 10k miles since , If you know a gas man scrounge an offcut from a gas fire closure plate (Alloy not steel) and a bit of foam they use for sealing flue ducts. worked for me. Yes in a former life I was a CORGI service engineer.
