Hi all, Apologies for late response to your suggestions, had BT broadband problems, AGAIN!. The car was up on the ramps for its MOT (passed) where we had a good look at the engine and gearbox mounts all of which are OK Jonathan, I haven't worked up a methodology for measuring the difference between hot and cold which does involve burnt fingers, my welding gloves being too stiff to hold a tape, but shall think on it. A bad photo, but you can just make out the melted aluminum sticking to the primary. and the skin has a melted edge.