I'd like to have a go at doing it myself but I'm a bit unsure of what to use for the nipple. I was thinking of drilling the old nipple out but snapped 2 drill bits trying... Would any of these be suitable (
http://shop.ebay.co.uk/i.html?_nkw=c....c0.m270.l1313 ) and then use a small weld to make sure it holds?