Yeah, the guy at the bike store removed the paint on the bars where they clamp to the stem, and i've had people ride on the handlebars and they dont move. So if they do move, i will put cuts into the stem like you said. (i've heard someone who has a kink roc, had the same handlebar problem and put cuts into the stem and they never moved on him again. Thanks for the reply anyway.
Did you make the cuts deep? Or just enough to take the paint off? And were they diagonally or horizontall?