The rough idle was down to an air leak after the metering head, the pipe was crushed and created an opening by the previous owner! Now that that has been fixed I've been given a different problem, once fired up and after the 'choke' period, the idle sits at about 1250rpm, but after a very slight flick of the throttle it sits back down to a 1000. It still does this even after a long run - anyone know how to solve it?
Also gtijoe, what bushes are likely to be kapoot!?!