Joined: Jul 2002
Posts: 40,863
Likes: 3,116
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
I believe putting mustache bars into your existing stem may make the problem worse, not better. It is usually recommended to get a shorter reach stem when going from drops to mustache bars.