Check the link listed at the stickie on this forum..'every kdx rider should read...' to CDave's site.
He lists common hop-ups in a logical order, what to expect from them and such.
No, they didn't change it in '03. Someone took the snorkle off the lid already. The largest change in the 'H' model since its inception is BNG, meaning Bold New Graphics.
In other words, no.
Guards? E-line if you can find it (I don't think they make one for the kdx..not listed in rockymountain anyway) cuz they are tough and light. Works makes a bottom plate that works well. Devol makes frame guards, rotor guards and such. Check with FRP (fredette racing products) for guards, too.
Get some rad braces. NOT guards (as from devol) but the BRACES that will save your rads the first time you fall over. Heck...if the bike just TIPS over from putting the kickstand in the mud you'll likely smush a rad. They are $pendy, so take care of 'em!!
SET YOUR SAG!
GREASE THE SUSPENSION/SWINGARM/STEERING STEM!!
etc. etc. etc.
A dirtbike always has sumthin' that needs doin, and it usually co$t$ money!
btw...buying a 'gnarly' doesn't tell anyone anything. If you have a question regarding pipes, know what profile you have. Maybe the number that's stamped on the thing is even right! It could happen!!! -30 is a rev profile, -35 is a torque profile.
When you send your carb off to mr. ron, ask him to stick in one of his handily adjustable air screws.
They are so cool. Neat? Hot? _Itchin'! whatever.....
:)