My R90 died on me today. It all started yesterday. Before that the bike never missed a beat. Yesterday I was riding it into Santa Fe. The bike would start cutting out intermittently. The cut outs were very short in duration. And seemed to be only happening when I was climbing a hill at high speeds. Today I had to ride it to Albuquerque. Again it was cutting out intermittently. The cutouts got longer and longer. They also started happening at lower RPMs. Then on the way home it died. I pulled the carb bowl covers. The gas looked good. I checked the points they looked good too. I've heard that the diode boards die on these things.