So I just completed redid my son's raptor 50 and it has no low end power just bogs if going up any hill. List of mods are big gun rev box, big gun exhaust, clamp on filter, raptor 80 carb and thumb throttle, and larger raptor80 18" tires. Bought a new oem raptor 80 carb and Installed the recommended 80 main jet and it has the 12.5 pilot. Also took out 4 clutch ball and replaced the clutch plates. I have messed with the idle and mixture screws for 2 days and it just don't have any low end. Top end seems ok as it will do 24mph with me on it. Feel like it should have alot more low end. If I ride in a flat field with loose dirt all it does is bog until I get it going with my foot.I'm at sea level and I just feel like maybe the jets aren't exactly right. I have read several post but can't find a complete answer.