My 600SS has the unadjustable Marzzocchi forks fitted and the LEFT one leaked every year, regardless of who fitted it (me or my dealer).
I got peeved about this and fitted "leak proof seals" against my dealer's advice. I got them from
http://www.motohaus.com/html/seals/l...of%20intro.htm. They don't list the Marzzocchi forks on the web, but they do sell them - honest!
The only prob I had was with one of the washers being too thick.
Anyway, that was ages ago and NO LEAKS!
Probably one of my better investments..........