Hi everyone. I just came back from a 2000km ride on my '98 XR600, and used 5 litres of oil. I was burning it. My engine was making a nasty rattling noise as well. I've only got 10,000km on the clock, but i dropped the bike in a big muddy puddle after i bought it and so i think some crud got in the cylinder and scored it. Anyway, I can get a HRC 628 kit including cylinder, piston, cam, etc etc for about the same price as reboring and resleeving my current cylinder. Is it worth the upgrade, and will my engine still be bulletproof? I run to some pretty remote places (epirb anyone?) so that's why I have this bike in the first place. Basic, simple and reliable.