well, that has answered my last question, but it’s not much use until the other questions are answered. To be honest ‘from a bike shop’ is not the most useful answer, i was hoping people would realise that i knew that much at least. implicit in the question was the request for some useful information about the best place to get the stuff, both in terms of the quality of the stuff and the support of the shop. In that respect, google is not my friend. but thanks anyway mfor your patronising input. I hope to be able to do the same for you one day.