Mine rusted/de-bonded, had pulled away from the front wheel. Got the clips, so thought I'd have a go.
In the end I undid the bottom screws and pulled the skirts back from the top and then cleaned it all up as far as I could. Then used a silicone sealer to stick it back together.
Few G clamps, left it for a bit and it all seems OK. Bit of a gap at the top, but when the doors are closed looks OK.
Not called bodger, for nothing.