I bought some NAP Shock Waves the other day,to check their quality.As I played around with them,I found the blades open faster,smoother useing a small rubber band,like the ones on Rockets.The rubber band has to go above that o-ring notch.To the next " notch" in the blades.
Will this work,,,I think it will.I' m just not sure how much is needed to keep the head close through the shot.Anyone try this already ??[]