it took me about 3 months to find a complete set,there was a pair of them for sale from a gloucester bike breakers but as there are 2 different types,ie left and right i did not go for them
Thanks for that I got them, they are now ported and on my bike.
The ad was a bit confusing so I gave them a call to confirm what they were.
If its just the start of cracking you have plenty of time, the set I took off had been progessively getting worse for 3-4years , have a good dig through the breakers shops on ebay, it can pay off, I paid £24 .