I have 63,000 miles now. I had the two transmission components (1) Part # 38800-MGS-D21 Sensor Assembly (transmission gear sensor). $188.99. Labor $147.00. 2) Replace ratio control motor Part Number 31300-MJF-A21 $265.99 LABOR $110.00 + TAX) replaced at 48,000 miles. Recently I had both sprockets, chain and spark plugs replaced with the oil change. Since then the bike has been running rough. It lurches at start ups, sometimes shifts very rough and sometimes it dies when starting out. Never had this before. Any ideas?