I am looking at buying an 06 with 13k on it. It's a one owner bike and is as clean as new. I was about to buy it then I read about the valve spring retainers cracking. Is this something that is one of those will happen for sure or is it just a here and there thing? What mileage does this usually happen? The bike has been well taken care of but not sure if that makes any difference or not. Just looking for a little info on this. I'm starting to have second thoughts a little. If it's just a hit and miss thing well we all know all brands have those but if it's for sure going to happen then maybe I should just pass on it. What are your opinions?