when im dragging my r when i get almost to the top of a gear it will start kinda spitting....i think i have a jet problem...what do you think and what do i need to do

 

I own a 440ex and i have found that there is a sligt problem with the air intake hose that connects your air box to the carb. Sometimes the clamp that holds it together gets lose and it starts to suck air straight through the carb. check it out, it might fix that problem.