Can anyone help, can you buy the little rubber bung thingy that sits inside the front brake lever ? Thanks
Make one from a bit of plastic or metal of a suitable diameter. It's about 4mm dia and 4mm long. Best to make it slightly long then fine tune it to get proper operation of the brake light.
Take a look at the rubbers from mechanical pencils. Bout the right diameter and you can buy em down the shops. Which is nice.