Thanks! For those who have asked, it is still the original engine. I have never had the heads off the engine yet and it doesn't really burn oil. The worst problem it has had happened at around 385,000 miles. A bearing on the cam reduction shaft developed enough play to create a bad oil leak. This is the bearing behind the upper timing belt pulleys. It took almost a month to get the bearing from Japan and I was able to replace them without removing the head. While I was in there I removed the front cover and replaced the clutch, basket and oil pump chain and sprockets. The clutch was not slipping but had been acting weird with lurching starts uphill. I think it was notching in the basket that caused it. And since I was there, I figured it couldn't hurt to replace that little chain and sprockets that ran the oil pump. Other than that, it has just been routine maintenance and wear items. Believe it or not, the chrome wore off the fork tubes around the 300,000 mile mark. Luckily, parts are cheap on ebay!
s, and at your age,