I'm looking to buy a late 90's 600 sportbike. There seem to be some good prices popping up now. My concern is, what kind of mileage is acceptable? Should I shy away from bikes with over 30,000kms? I just spent $$ doing chain/sprockets/brake-pads,etc. on my current bike, and I'd hate to have to shell out a bunch more cash within the first year of owning a newer bike. I guess it all depends on how hard its been ridden, and what kind of maintenance has been done. Anything else? Opinions?