Good luck! It took a shorter stem and a new saddle for me to stop sliding around so much (and it still happens, though that's a combo of a still-too-wedge-shaped saddle and slippery shorts).

I left the stickers on there. I'm lazy. (The ones on the roadie are inconspicuous. The one on the CX is in a really obvious place. I'm contemplating moving that one down an inch to protect the paint from the bike rack.)