Seems to only be when I ride for more then an hour but my 01 sportster 1200 has a problem with down shifting. I can sit there and slap it down over and over again but it will stay on 4th or 5th. Till I come to a stop and rock it for a little

 

This may help you diagnose the issue? https://www.hdforums.com/how-tos/a/h...c-guide-413004