Caledonian123

I have a Hornby B12 from 2008 that is running very poorly since as you can see from the photo, has worn through its wheel pickups. Looking at the service sheet 218C, new pickups are part number X8619. I have looked these up on Peters Spares but they have not had them in stock since 2014. Therefore does anyone know where else I could get new contacts? If new contacts are not available can anyone provide advise on how to make contacts from scratch? Many thanks for your assistance.