My Honda VTX 1300 custom that I have had only a year and got used with 27000 miles on it was shifting just fine. Then wile on the interstate stop shifting and was stuck in second. I finally got it to nutral to get it up on a roll back to get home. I messed with it and finally got first back but nothing else. It just shifting from N to 1st and back won’t go into 2nd or any other gear. Can someone help please. I’ve tried rocking it that’s how I got first back. I’m thinking something internally is gone out. It has 29000 miles on it now.