Received and installed a Vortek kit for my 350 today. The installation went very smoothly, not a problem at all. The initial cocking was a bit heavy. Toward the end of the cocking cycle it really got hard. I let off just in case there was something wrong. I eased into it several times until finally it was latched. It shot with a thud and most of the torque was gone. No twang but then I never had a twang stock. It shoots hard with mostly a forward backward motion, 90% of the torque twist is gone which is what I was looking for. Now when I shoot I am still somewhat on the target where before I was not. In a few days I will chrony it and give an update. It seems to be shooting just as hard as before. When I shoot off a rest with not much hold it will twist clockwise. If I have a light hold the twist is not noticed. It will be nice and I will like it fine....Frank