Alright guys I picked up a 01 400ex dirt cheap that needed rebuilt. So after examination of everything I’m led to believe the guy blew it up because it was stupid lean. Don’t know what piston it was because it was destroyed. It has k&n filter, Curtis sparks exhaust. stock cam. When I pulled the carb apart it was stock, main and pilot jet were stock. Needle was in middle clip so its stock. On the rebuild it will have the K&N and the Curtis sparks exhaust. 10:1 wiseco 85.5mm piston. Where should I start jetting wise and what range of jets should I pick up so that way I have what I need.