Right, I've put them in, very easy. Unfortunately it didn't make any difference.
I've checked where the majority of movement is and it's definitely in the runners, so I may have to try something else, unless somebody has an idea.
Another severe mechanical problem is the drivers wing mirror, it's wobbly. YES I've tightened up the screws but it make no difference, plus one of the screws is now turning along with the metal sleeve where the threads are.
Problems, problems, problems.
I await the sarcasm.