Well I have a 1985 suzuki alt 185, It runs good but its having a problem on full throttle, somtimes if you punch it in second it will stand up, other times it kinda boggs but still pulls ok. When its reving like it suppose to it will pull the front tire up every time you change gears. I cleaned the carb 2 times and cleaned the tank out, its getting the right amount of fuel. I just cant figure it out? Could the air to fuel mixture cause this?