I have used it several times with no issues in the past year, just the other day I took it out and rode for an hour and the F1 light came on. Now it has very poor acceleration, will not do over 30 and every so often it will have spurts of full power then bog right back down as fast as it starts. Checked all the plugs they are clean and firing prperly, Cooling system is wide open, fuel is fresh 93 octane, oil is at proper level. I am lost as to what this could be and i would like to try to save a few hundred dollars if I can avoid bringing it to a dealer. any advice on weather this might be a common issue or an easy fix?