So I got an 05 rm85 a few days ago and when I use about quarter throttle it bogs to a certain rev then when Im up in my high revs like full throttle its going fine ?, does anyone know whats wrong ?, I cleaned the carb out completely i think maybe the air screw needs set right or something im not sure, first time owning one of these wee bikes, it was completely rebuilt aswell and i got the reciepts off the guy I bought it off, any help would be appreciated! Thanks