I picked up a 2004 cbr600f4i with 30k miles in trade for my 240sx track car. The prior owner(s?) to my knowledge are not mechanically inclined so I doubt it has been done. Anything I should worry about? If so does anyone know the average cost to have it done/checked? I am currently planning on dropping at least 800$ in parts to replace a broken muffler and wearing chain+sprockets+cam chain tensioner, so if I have to throw much more into it, it may be worth selling it for ~2k or so and spending the $$ from parts/labor on another bike with less miles.