It's an on and off problem. Sometimes it does it, other times it doesn't. My problem is that even at WOT it won't go past 11k rpm's sometimes. It goes just fine up to about 9 then starts to slow down and falls on its face and won't go past 11. It's so strange and feels so weird. It's like its being held back. I don't think its the fuel filter. Maybe the fuel injection or spark plugs? No idea. help please. 03 600rr 8,000 miles.