I have a 2000 WR400F which I luv to bits.It is my first 4 stroke Enduro (engine breaking city) My local(ish) MX practice track is very twisty & I find myself constantly changing from 2nd to 3rd & back to keep a good momentum. As far as I know my sprockets are standard but I did read on another forum the other week that one owner of the same bike said ditch the standard sprockets for ones with a different number of teeth.I cant remember the number he said nor can I find the post it was on.Could doing the same help my gearing as I notice most other bikes are quicker through the twists with no need to change. Any ideas what tooth setting to go for?(front & rear) Or am I just talking B******S & need to speed up my gear shift times. Thanks for looking..Paul