Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
If it's properly adjusted, it should pop right in and stay there. That's the whole point of indexed shifting. If it's improperly adjusted, it's inferior to friction shifting because, as you know, you'll just wiggle the lever to get it perfectly on the cog.