Rust under arch...what do i do?

[surcalation]

My did so I just had them chopped out, bye bye arches, hello wide arch extensions

 

[scos]

With regards to the clutch pedal problem.... I just bought a mk2 16V cupra with the same problem. Posted around this forum and someone pointed me in the direction of a new cable - fitted it today and it's much better. Give it a try, was only about £25.