I know this is an old topic, but I have just bought a Ross 490, sail number 11.
The floor has rotted out, and the jibs are a bit average, but other than that it is in pretty good nick. I am currently working on replacing the floor to get it in the water. I know you are at the other end of the country but I'd love to see any photos of your boat (assuming you still have it), especially around how the sail controls are setup etc as mine came 'with some assembly required'.
Any help, comments or general moral support is appreciated!