Well, we are experimenting with the adjustable stem off of another bike. This stem got the handlebars closer and higher so they are much more comfortable. He will ride it for a few days and see if it is worth buying a stem extender and a shorter stem.

If this looks like it might work my next question is how to get more cushion on the handlebars. My experiment for tomorrow is that I am going to remove the worn and extremely dirty handlebar tape from my road bike and use it to double wrap his bars to see if that makes the bars more comfortable. Other suggestions? This is temporary at best because my tape is in rough shape.

I am also looking for wider tires that will help cushion his ride.