you dont need to undo the 17mm nut just take the 4 bolts holding seat on and lift seat/tank up then slide straps under, keep them clear of fuel pipes and make sure fuel pipes sit in the grooves when you put it back down
take care on the front straps, its easy to get them where they are trapped when you put lock on.
i should have photographed mine as i have now forgotten exactly how i had it all
you can see it all set up on the bike at my .mac website
http://homepage.mac.com/gizmo999/duc...toAlbum10.html [Edited on 9-10-2005 by Gizmo]