I have a 2006 600 Fusion. When I adjust the riding position on the steering column to the number 7 position the RPM's race and when I put in in the number 1 position the sled idols way down. Common sense would say that the cable is being stretched, but it isn't. It is moving the brass pin underneath the adjustable screw, but the actual throttle on the handgrip never moves. Has anybody else had this problem or hear of it?