Yep! It's no problem. Just make sure you only sand the area that's definitely gonna be hidden by the tube. It's very easy. Just cup the sandpaper in your hand and twist the stem. It's easy so do bit at a time. Lots of grease too. Don't push it too hard into forks. You'll know when it fits well.
I sanded a £50 stem! :-/
Yep! It's no problem. Just make sure you only sand the area that's definitely gonna be hidden by the tube. It's very easy. Just cup the sandpaper in your hand and twist the stem. It's easy so do bit at a time. Lots of grease too. Don't push it too hard into forks. You'll know when it fits well.
I sanded a £50 stem! :-/