A touch from Jack, Blenki's mechanic: a bit of sand paper glued onto the shifter paddle of Blenki's X0 shifters for those times when Blenki really needs postitive contact with the paddles.
I respectfully disagree. Having used a lot of SRAM shifters I can honestly say that a concave shifter paddle would feel a lot better than a convex one.
I am not saying there is anything wrong with concave. I'm saying that making the SRAM shift paddles concave would be better. As it stands they are convex.