I have new tubes and want to replace bent ones on GS500F 2004. Recently, I've seen several topics with instructions and info about some damper tool, but now I cannot find them. Could you give guidelines how to replace fork tubes? At least, how to start... :)
You might want to look around in the Fork seal replacement threads.
That type of work involves removing the inner fork tubes.
Here's some info on that tool.
http://gstwins.com/gsboard/index.php?topic=16318.0 (http://gstwins.com/gsboard/index.php?topic=16318.0)