Brun Mate, if I recall correctely, the reason one side of mine was hanging very bad was because the plastic round the mounting hole had cracked. If you have a soldering iron you can plastic weld a lot of these cracks back together, although in the end i used a strip of metal and a self tapper to reinforce it. It started sagging a wee while after i slowly slid up the arse of a taxi (bloody mondeo) really slow, no marks on either car, but this must have been when it cracked, so it would appear they are not very tough at all. Take it off and see if there is any problems. Youll get the side nuts by jacking front of car up, wheels off and stick your head in the arch. Think they might be nylon nuts, so shouldnt have any prob with rotten nuts. Have Fun, let us know how you get on
Alex M