I know most of you have had fast64rachero do your carbs. I to had him do mine on an 08 ktm 525xc. I was so impressed, that I asked him if he would also do the mods on my 09 ktm 250xcf dirtbike. He knocked it out of the park. I know this is an atv forum, but his mods are for are sport. The throttle response is super crisp, torquey low and mid range with a excellent over rev. I check my top mph prior to the mods and it toped out at 66.3 and after his mods 77.8. Walt is a great person to deal with. I really appreciate all the time and effort he has put into are sport. For the money spent for the mods, it is the best money spent.