Hi all. As usual I only end up here when I have an issue with my motor. The engine cover has started to rattle. The foam liner has deteriorated with age as has the damping pad that runs round the top of the engine. I have the part numbers from a site you guys directed me to for other things but can't seem to locate the bits. 03G103954 for the Damping and 03G103925BK for the cover.  Is it possible to replace just the foam liner on the cover rather than the whole thing?