Hi Renegade!
When changing the tranny oil in your bike, go ahead and dump the whole quart in. It won't hurt a thing and it will reduce noise as well. I used to use ATF type F and change it every other ride,... much cheaper than expensive gear oil.
good luck
EDIT: btw - anything you read about '97 or newer KDX 220's will relate to your bike as well. The KDX 200 has remained unchanged since 1995 and the 220 since 1997 (first year of the 220)