EXUP Worldwide was born from the ashes of the original EXUP Brotherhood – the definitive forum for all those who have interest in Yamaha FZ, FZR, and YZF motorcycles.
One of the biggest sources of procrastination habbens to be the 'net, i waste hours on ebay and forums of all kinds (sad aint it) when i could be in the garage or (whisper it ) riding the bloody thing.
In the upper part of the fork there are busehes/sliders that wear out relatively easily, usually this results in seals having a much reduced lifespan, however it possible that they are causing the tube to bear on a point leading to the scratching identified.