I have the same problem. The Schwinn Trailway has a swivel kind of thing ahead of the post where it looks as if you can adjust the height of the handlebars. There is a allen head bolt that goes from side to side of this swivel "adjustment" (which by the way has a decal saying "do not adjust torqued to ....") that I loosened. I actually removed one side of this bolt without being able to budge the handlebar. This did not allow the adjustment to be made. I saw a picture on the internet showing this adjustment is able to be done. The owners manual is a joke. It says nothing specific to the Trailway. I went to the Schwinn internet site which says do not attempt to do ANY adjustment. They say to bring the bike to an authorized dealer. Is there anyone here that can help with this adjustment?