What specific things should I be looking at? Based on prices I've seen on Craigslist, I'll be looking at 2005-2007 models. I've bought and sold a few used bikes and I do most of my own maintenance, so I have a general knowledge of motorcycles. But the collective knowledge on this site is amazing, so I thought I'd try to get "GS" smart before I go shopping later this summer. Are there "bad" mods that people do that would make you steer clear of a particular bike if you saw them? Are there mods that are desirable, that make the bike a better deal? How much mileage is too much mileage? What questions would you ask? Would you be leery of a bike advertised as having been ridden to South America? (I have my eye on one such.) Anything specific to the bike I should look closely at when I go see it? Thanks for the help!