How does the old one come off, it seems as if there is 3 clips holding it in place...
i heard someone on here saying something like heat the original one of with hair dryer then doing the same with the red ones and putting the red ones back on the grill.
if you could get something good to stick the red ones back on then it would be a shout
maybe get some double sided tape from 3m.
seems a lot easier than messing around with the moutings