They switched it around with the 05 and up 250s. Comp. on top and rebound on the bottom. Im in the middle of setting up a new 07 for enduros here in NJ. For our tight terrain, I feel that the gearing is too tall and will try a 12/49 combo this weekend. Maybe a 12/50. The redesigned engine, 05-07, lacks some lowend compared to my 04 KX250, old styled engine. But from the mid on up, the 07 stomps the 04! Future mods will be a FMF Gnarly or Pro Circuit Platinum 2 pipe, both good low end pipes, and maybe a V force reed cage. Keep us up to date with your mods and settings and welcome!