Got the death wobble the other day. Took one hand off the bars and wobble slowly builds to the point where you better grab the bar again or die. Tore down front end and replaced the head bearings with new taped rollers. No noticeable problems found with existing bearings just a lack of grease. Back together and problem seems to be gone. Took about 6 hrs. to do the job. Had to cut the races to get them out.