Put a stem extender on my new minivello. Only 2 inches. .Didn't affect cables, but I still want more height. Bars still 2-3" lower than on my folder.

On a Schwinn mountain bike with flat bars that I rescued from garbage can last winter, I recently put on both a stem extender and 4" riser bars, I like it. As I was replacing the combo shifter/brake levers anyway, the old cables probably would not have worked.