Hello all, one of our IL members is experiencing a loss of performance with his R75/6. We are looking for ideas. Original owner with an extensive list of experience with his bike. All stock except for a Dyna III ignition. Earlier this year, the owner noted a decline in fuel economy (MPG). Now the bike has trouble achieving a highway speed much over 60 mph, however, the motor revs to 4000 RPM easily in neutral on the center stand. If anyone has experienced this, or has any ideas about it, please let me/us know.