I have a 2006 Hayabusa that sometimes takes a couple tries to start,runs and idles fine but it has something with the throttle. When fully pinned it won't go over 2500 rpm and will rev up when let off which makes moving it a hassle since it has trouble getting the clutch to gas ratio right trying to ride. What might that issue be? Spark plugs are good but air smells a bit funny when at idle with new gas throttle itself snaps back no vacuums or vacuum leaks fuel pump was replaced by previous owner no fuel controller on bike