About a year ago there were a couple of very long & detailed tech articles concerning the KDX220. Topics covered included pipes,silencer, rad valve, reed choice, carb size, air box mods, etc. These were accessed [I think] with the "tech Tip' or the "kdx articles" buttons on the main KDX home page. Those buttons now lead to an error page. Does anyone have an idea how to obtain the articles? I just bought a '99 220 and would like to re-read them. Thanks, Rob