In reply to andyd1970:
My wife owned a Rab
alpine light down jacket,
She had it for over 5 years when the main zip broke,
I called Rab and they asked me to send it back
The fixed it FOC
I'd imagine most gear manufacturers would do similar or possibly charge a small fee depending on the issue
Over the last ten years or so I've had two or three reason to return gear to manufacturer and every time I've found the manufacturer to sort the issue pretty quickly They gave either a replacement or repair so I reckon Mountain equipment will sort this out for you,