Hey guys, I'm having some problems with my bike. Ive had her for three years, and this year I started to notice a visible loss of power in the high end. It seems to be bogging or holding steady rpm at around 6500 and will not accelerate any farther into the gear. Motorcycle also loses power when using half throttle or more. Also, it seems to be somewhat related to the amount of fuel in the motorcycle, when its full no problems, when its empty I can barley maintain power. I have replaced all fluids, fuel filter, spark plugs, ect. which did help the problem somewhat but the high end loss is still there. Thanks for the the help in advance

Motorcycles - Ducati - 1098 S - 2008 Ducati 1098 S