Hi fellow cyclists Question: New Cassette, New rear mech, new chain, bought and set-up from local bike shop (Giant OCR, Triple Chain Ring, 9 sprocket cassette). Everything running smoothly (after I had a couple of return journeys to the shop!?!) and I have one gripe on running of bike ... on the middle chain ring at front with the chain on the lowest gear of rear sprocket i.e. the sprocket nearest the rear hub, there is the slightest of rattles (coming from the front mech). Every other gear combination, seems as fine as anything (thats 26 other gears!!). Is this possible? Many thanks for your considered responses. Bloody hard work these set-ups, particularly as they always tell me in the shop that testing the setup on the bikestand (jig) is not the same as on the road (but they never bloody test it on the road ... that's down to me and then I have to take it back if its not right .... which is a nuisance for me ... and them, I guess!!) Cheers Pendle 64 PS Sorry to go on!!