for ever, it has sounded like it was header pipes, radiator, airbox related. and after pulling the f$%^&g thing to bits at least 10 times and re-tightening everything the f%$%^g rattle was still there! and to make matters worse, it would only happen at certain revs and at certain speeds; just to absolutley piss you off!
accidently, while coming down to a set of lights, i sat up and pushed the clocks, and the mysterious rattle happened! and after a bit more detective work, i found there is a plate behind the clocks, and was attached by 3 nuts (weirdly, m5) and was rattling against the supports. after 'some tennis down a mouse hole' finger and arm gymnastics i managed to get 2 replacement nylock nuts on the bolts, and to add a stiffening support to the plate (bent it a little to stop it wobbling about). in the microfiche, the plate is in the lower left of the fiche, and the nut is 92210 in the lower left corner.
![Image](http://i1141.photobucket.com/albums/n583/dickfaber/3912211_140518_014116_1103_zpse5feb574.png)
so if you've got weird twin rattles driving you bat shit crazy, have a look at the clocks!