1) ENGINE FUEL CONTROL ISSUES WITH CHANGING ALTITUDE. 2) THROTTLE FAILS TO RESPOND TO INPUT UNTIL I INCREASE MORE THAN 20%. I THEN GET ALL 20% AT ONE MOMENT. I HAVE ALMOST CRASHED MY MOTORCYCLE WHILE RIDING IN THE MOUNTAINS OF CALIFORNIA AND WASHINGTON. I HAVE RUN OFF THE ROAD BECAUSE OF THE SUDDEN ACCELERATION. I WAS ABLE TO STOP UNHARMED DURING THAT INCIDENT. THE ENGINE CONTINUES TO RUN POORLY AFTER RETURNING TO THE ORIGINAL ALTITUDE I STARTED AT. 3) THROTTLE BODY ADJUSTMENTS HAVE BEEN MADE TO ADD MORE FUEL TO THE ENGINE ALL THE TIME. THIS HAS NOT HELPED. IT HAS JUST LESSENED THE SYMPTOMS, NOT FIXED IT. TURNING THE BIKE OFF FOR A 1 OR 2 MINUTES RETURNS THE ENGINE TO A PROPER RUNNING STATE. YAMAHA IS NOT ACKNOWLEDGING THAT THERE IS AN ISSUE, EVEN THOUGH MY DEALER (ADVENTURE MOTORSPORTS IN MONROE, WA) HAS RIDDEN MY MOTORCYCLE WHILE IT WAS ACTING UP. THIS ISSUE HAS BEEN REPORTED TO ME BY 46 OTHER OWNERS WITH VIN NUMBERS WITH THE LAST 6 NUMBERS OF 000385 TO 003350. *TR