I found a guy selling an 03 WR450F for $700.00. He say's the bike overheats when idling and that he thinks it's because the radiator is dented. I'm not buying that answer (though I have not seen the bike yet) but am wondering what else could be causing this problem. Also, are there any other red flags I should be looking for? I read in the FAQ's that the woodruff key needs to be replaced but the link describing what needs to be done is broken. How much work is involved to fix that issue? Is this bike worth pursuing or save an extra 500 and buy a decent 200+ 2 smoker? Also, this bike's main mission in life is to be a dunes chariot. That's it.