In all honesty, I'm not at all surprised, A 20+ years car with over a 100k on the clock 
The days of finding a rust free Mk2 are very probably over! Even the elusive time warp cars have rust, especially GTI's with all the extra water traps
I suspect that full body rebuilds are now going to be the way forward to achieve what so many want!
Thom
I hope this isn't true....
There must be one or two out there that are "More or Less" rust free...
I don't mean rust free panels or tailgates, but actual shell's on the whole that are rot free....
They may take some finding but lets not give up hope...
As it so happens the 3 door that I've got at present that was a "Cat C right off" is rust free.... but it needs wings and doors and a tailgate... but who would wanna buy it??