I have used Durafix: http://durafix.co.uk/
I am sure there are other makes
Filed down the ends, then used a wire brush with stainless steel wires to clean it up
Placed in a vice making sure it is all lined up
Used a plumbers gas torch to heat up the parts and when hot enough let the rod melt into the joint
Filed down the over fill and bobs your uncle


Now fitted to the bike so let's see if it holds up
Hope you found this useful