Don't know exactly what's going on but from quick snap of the throttle in gear to let off it stalls. Breaking into rock sections it stalls. It's driving me literally insane. I've tried 24 ball c200l5 and c150l4 springs 27 ball same set up c150l4 27 ball. All with the same exact effect. Stalls in quick snap of the throttle to slight let off like as if your in a rock section. The whole purpose of this clutch is to eliminate the stall. My riding style is pretty much like a worcs race. Rock section single track and the occasional motocross section.