I've done perhaps 35 thousand km's on my bike now. No big mechanical issues - but it has had some issues with the valvetrain. Basically the bike was in Cambodia for a long time before i got her and the valves in it are re-ground and sound clattery as hell lately. I want to buy new valves, seats and seals in the interest of preventative maintenance. I just know Honda parts. Are there any aftermarket valves out there?