I'm thinking about adding a flywheel weight to my 03 KX250 to smooth the power delivery. I was wondering how much difference a flywheel weight will make and what weight to get. I'm considering a 13 oz weight. I play ride a combination of MX track and fairly tight technical trails in NC & SC. I usually ride a KDX200 when just trail riding, but often use the KX when a day's riding will include MX and trails. I don't race, and I'm not concerned with losing some snap on the MX track. How much difference will a flywheel weight make? Is it worth the money? Thanks!