I also have a 98 220 and after a little fiddling around with the clickers at the bottom of each fork tube, my forks work fine for me and I have no ambition to send them anywhere. If you want to do some minor damping adjustments, the clickers at the bottom of each fork leg turn in (clockwise) for stiffer damping and out (counterclockwise) for softer damping. There is a better explination of this in your factory manual. Now I am no suspension expert but I found that playing with the clickers on the font and rear suspension makes the KDX suspension work fine for me
07 KTM 300 XC-W
"A day without dirtbiking is like a day on a quad."