Increased IDLE SPEED **usually** means the engine is GETTING MORE AIR from another source. A vacuum leak give it more air and raises the RPM. In 95% of all cases, this is the case.
Pull the seat, pull the tank and inspect all of the hoses and the base of the throttle bodies. There are 4 clamps down there. If one is sucking air, it could explain this. 4mm allan cap.