I was driving home from Bike Week yesterday, on a back road doing about 50 miles an hour going up a hill, when I tried to downshift into Fourth only the bike stayed in Fifth gear, but the engine revved like it went into Neutral. I got it to the side of the road. Trying to diagnose when shifting, it will say it's going into First gear or Reverse, but it won't actually move, the engine just revs. There is a clicking sound when you put it into gear, and something is rattling. I had to pick up my bike the next day with my trailer; got it home; and checked the linkage. The bolt is tight, but it wobbles a little bit when changing gears; you can see the linkage move back and forth. The bike says it's in First but just revs like it's in Neutral.