I was wondering the same thing. When I flipped my clutches, I started getting a weird vibration that gave me the willys. I just didn't like it, cuz it felt like something was going to shear off. Everything was to spec and shimmed correctly - I checked twice. When I posted about it on the forum, nobody had any ideas as to why.
I'm going to flip my clutch back, but I REALLY would like to move my shift point up. I was thinking about cutting springs too. If you do it, please post results!!!