I'm getting my 500 ready to be sold. I brought it over to a local 500 expert to have him look it over so I can turn it over to a new owner ready to go. I have two motors that I rotate so that I dont have to sit around not being able to ride IF the thing ever goes belly up. Thing is, it never did. I showed him a cylinder I used for two years straight. It still has the cross hatches in it! He measured everything out and tells me put a new piston in it for grins. The other cylinder has been in it for 8 months, awesome shape (I did expect this), tells me to put in rings only just because. These motors are the cheapest most trouble free motor you will EVER own. I will likely kick myself for getting rid of it but I made up my mind to move on after 5 years of just plain grinning. Thank you CR500!