Yeah...I used to own a 2-stroke('97 cr 125), and I had to change the top end so many times I lost count. I just got my 426 a couple of months back and I love it like a man should never love a machine. Anyway, I was just wondering how the top end is reliability wise compared to a two stroke. I just wonder if it will be the same drill. And if you have any regular maintenance tips it won't hurt. Thanks a bunch in advance for your replies.